Major Jihad Raslan
Major Jihad Raslan, (Syrian Air Force, defected, self-described), is an important alleged witness to The Houla massacre. Now serving as a commander in the Free Syrian Army, he of course is one of those swearing to an attack by the government he served, he says, until just after he witnessed the massacre.
On June 2 Raslan’s account was first publicized by the Guardian (the Guardian-affiliated Observer mentioned, but it doesn't appear on that site): "I “saw massacre of children, says defecting Syrian air force officer,” by Martin Chulov. Chulov, who had earlier interviewed star witness Ali Al-Sayed, effused that "the officer's account to the Observer of what took place is among the most important of the testimonies to have emerged since the massacre."  The initial interview was picked up by many others as major news (e.g. Al Arabiya and the Atlantic Wire).
In July, a second interview was published, on video nearly five minutes long, by Der Spiegel [RS1] and then Der Spiegel English.  This report, by Christoph Reuter and Abd al-Kadher Adhun, provided further details of his account, as well as a helpful visual of the man (top image), his face, and mannerisms. (see discussion page for full transcript)
And finally he spoke to the team from France 2 producing the September, 2012 documentary Houla, autopsie d’un massacre. Here's his name is given differently, as "officer Jihad Hassan." Account details will require some translation before appearing here, but the rest is addressed below.
Defection on the 26th
The accepted story is that Raslan defected only after the massacre. He wasn't protesting, just 'on leave,' and didn't believe the government would massacre until he saw it himself, right by his house. He told Reuter/Spiegel "After 5:30 pm families headed west of my house. They wanted to flee into the village. We asked them what was wrong. Were searches being conducted or something? They said they were in the process of massacring people." 
Chulov reported in the Guardian: "A senior Syrian military officer has described how he defected to opposition forces after witnessing [the massacre].” Chulov even specifies “Raslan served until last Saturday [May 26] in the Syrian Air Force in the strategically vital port city of Tartous.”  After witnessing the horror just a bit down his own Saad street, he defected the very next day and joined the uprising. The lesson of this is clear: Assad's military was leaving, joining the uprising, because of the very massacres allegedly committed to crush the rebellion. As Raslan unselfconsciously framed the situation:
- A lot of them were bald and many had beards," he said. "Many wore white sports shoes and army pants. They were shouting: 'Shabiha forever, for your eyes, Assad.' It was very obvious who they were. "We used to be told that armed groups killed people and the Free Syria Army burned down houses," he said. "They lied to us. Now I saw what they did with my own eyes."
- "Those victims who were slaughtered are people that I knew well," Raslan said. "These children I knew well, personally. I ate with their families. I had social ties with them. The regime cannot lie about these people, who they were and what they did to them. It was a brutal act by the regime against people who were with the revolution," he said. 
In Charge on the 26th? Standing in the mosque, the man gives his details (audio not too clear) and shows an ID card, presumablyhis own, but not readable (same template seen on the card of Army defector Hussein Harmoush in 2011. He then sits down with them and seemingly briefs them on the situation as he, and the other rebels controlling the the mosque with the victims, saw it. This man's face, nose, build, hairline, uniform (defector) status, and relaxed, confident, charismatic demeanor, are all immediate matches with the alleged witness later interviews by Der Spiegel. He seems here to have a different hair style and uniform than seen in July, but those were his clear FSA days (leading the 'Bouqu Brigade 72 company,’ since the rebels have no Air Force) . This first day, he looks freshly switched, still with his three stars (suggesting something higher than major, actually) but with a pin with wings on it, suggesting Air Force.
Even by pulling rank, it seems strange that a defector just hours into his new life could become positioned as the main point man for the outsiders investigating this (possibly rebel) crime that allegedly triggered his switch. Otherwise, the best guess for a man in the position seen here is someone who had defected some time ago, and was already in a trusted position with the local FSA units by the day of the massacre.
Otherwise, this aspect of this alleged witness could be a dead end. The rest is worthy of study either way.
Special Insights on the Attackers
From his previous life Major Raslan had extra information on how the Shabiha and army worked together :
- The officer said he had regularly seen Shabiha groups work alongside regime forces, but said they appeared to take orders from intelligence officers, particularly the Air Force Intelligence Directorate, which has played a frontline role in the regime crackdown. "The military give them weapons and cover, and escort them in tanks," he said. "But they sometimes work independently." 
They worked against the Sunni majority, as Chulov heard; Sunnis make up the bulk of the lower ranks of the military, he wrote, locked in place by officers of "the Alawite sect, which uses an uncompromising police state to maintain its iron-clad grip on Syrian society." Just as the military reflects the society, so the locked-down Sunni town of Al-Houla reflected both. Raslan explained "there were no Sunni soldiers around Houla itself [when the massacre took place]. They are all Alawites there, the officers and the soldiers. … [Houla] is a very sensitive area. Many of the Shabiha in Syria come from here. They won't defect from here."  This claim of an all-Alawite force over Houla seems quite likely exaggerated at the least, considering the normal representative mix of military conscripts used in the Syrian Arab Army.
Investigation of Crime Scenes
Major Raslan claims to live right on Saad road, just 150-300 meters from one of the homes where the Abdul Razaq clan was massacred (and,implicitly, near all of them). This, and not any involvement in the killings of his ostensible neighbors, is how he got so much direct knowledge of what happened to them. Major Raslan headed the first-ever fact-finding mission into three of these homes, within perhaps two hours of the first attack, and just after the last.
Reports suggest the killings here happened anywhere from 4:30-5:00 pm and continued for a while. As Raslan explained in his video interview: "After the Al-Maghrib prayer, at around 7 or 7 :15 pm, the site was clear again and we went in to assess the situation. We went out into the street to see if our neighbors were okay.  After running into the shepherd's injured wife and assisting her, he and unspecified other(s) started inspecting homes. "I was the only person who had a flashlight," he added. Sunset that day in Al-Houla would be around 7 :30 pm, so he sounds like someone who was there.
In order, they first visited "Samir’s house." Samir Abdul Razaq "was lying in the first room to the left and it smelled of corpses and blood. ... I fisrt saw Samir and then I saw his family and children. They were inside and lay on top of each other. There was a lot of blood.
Next they checked "the home of Mustafa Abdul Rassak … It had a veranda on the east side." He was injured but barely alive, "beaten at close range with a sharp object. His head had been partly fragmented. … part of his head was also on the ground. … He could breathe and see, but there was no way to help him. I told him he should recite the declaration of belief." Leaving the veranda, "we entered the house … [and] found the bodies of his family, wives [sic ?] and children in the guestroom. They were stacked on top of each other. ... It looked as though they had broken some things during their attempt to escape. The TV, table, and other things had been knocked over."
Finally, they "went to Abu Firas’ Home. He was the only man in the house. He was literally slaughtered. His family and the family of his brother had been murdered and their bodies had been stacked on top of each other in the guest room. They gathered the people in a room and killed them.  Strangely, there is yet another alleged head of a targeted Abdulrazaq household there who's also named Abu Firas, sometimes. We can be certain he's supposed to be a different man because he isn't dead, having spoken of his slaughtered family to two UK tabloids, one under the name Abu Firas, the other under the name Hassan. Coincidentally, Major Jihad, whose A.F. Abdulrazaq was killed along with his family, also uses Hassan sometimes to replace Raslan.
Whenever an alleged witness gives two or more accounts, comparing them is useful. Major Jihad's two comprehensible accounts are reasonably consistent (virtually photographic relative to the shifting details of Ali Al-Sayed), but sometimes consistency is as good a clue as its opposite.
Home location: Chulov heard that Raslan lived "around 300 metres from the site of the first massacre in the village of Taldous."  Chritoph Reuter heard "I was on the street where the massacre took place. I had the day off. I was just 150-200 meters from this street." 
First news: Der Spiegel: "At 5:30 am [sic] I saw the security and military forces. They were accompanied by a group of civilians and members of the Shabiha militia. They came from the city’s Mussasat Al-Miyah district and headed towards Sadd [sic] street."  The direction from is not clear, but it's mostly fields to the south, so from the north/city center is implied. Chulov, Guardian: "several hundred men whom he knew to be Shabiha members rode into town in cars and army trucks and on motorbikes. "A lot of them were bald and many had beards," he said. "Many wore white sports shoes and army pants. They were shouting: 'Shabiha forever, for your eyes, Assad.' It was very obvious who they were."" 
Massacre duration: Spiegel: "After 5:30 pm families headed west of my house... at around 7 or 7 :15 pm, the site was clear again."  Implied duration: not more than 90 minutes. Guardian: "He said the killings in his area were over in around 15 minutes. " 
Malik Baqur and the Southwest There is however confusion here. In text, Malik was "in his cousin's house on Sadd Street when he heard that armed men were coming down from Fullah to Taldou." He remained inside. "Until six o'clock, there was so much shelling that I was afraid to go outside. At about 5:30 p.m., I saw 40 men in uniforms and civilian clothing going up to Fullah," or departing after the massacre. Perhaps 6:30 was meant.
But in his video interview, he says he is "with the Free Syrian Army" perhaps even then, and and "we demonstrated on May 25, after Friday prayers" until the shelling started. Then they sent the noncombatants home for safety while "I stayed with my colleagues at the demonstration site" in the north of town. While there, he said, "I received messages from the troops along Saad street, telling us that a group was coming from the next village. I was told it was Fullah (Alawite, southeast), Alkabo (Alawite, southeast), and Algur (Shi’ite, southwest)." It's unclear if he's referring to troops of the Syrian Arab Army, or the Free Syrian Army, giving him this information. But they were around the massacre site, which was also near his home. The video continues:
- “After I received the message, I walked along Saad Street until I was about 300 meters from the site of the massacre. I reached this spot at about 6:30 and stayed there. I saw about 40 people in civilian clothes and military uniforms who were moving in the direction of Fullah. They were about 150 meters from the homes of the residents. Then I saw a pickup equipped with a 14.5 mm machine gun. The pickup was driving towards Fullah alongside the group. It was colored silver. For ten minutes I watched this group..."
As they walked, the Shabiha "fired into the air, celebrating their victory," by which he meant the massacre. He just stood there watching them, to make sure it was really Foulah they were going to. "I was standing a little higher up and could see the men until they were about 100 meters from the village," the text says. The silver (reflective) pickup would help long-range visibility. Plus, he recognized it, the text part adds: "I had seen it a few days earlier at the checkpoint that had been set up in Fullah sometime earlier."
The video cuts with the killers' departure: “After they had left the place, I remained there with three other people." He doesn't specify who. "We observed the place for about ten more minutes to make sure that they were gone.” In text, he was at his cousin's home on Saad street until 5:30/6:00/6:30, and then went outside, perhaps again to watch where they were going, off to the southwest, just like he'd heard they came from. As with Raslan, any knowledge of what they did just 300 yards away, how loud it was, etc. stays vague, but where the ghosts came from/returned to was keenly noted, as they watched the periphery but neglected the area, allegedly, right around them. But as soon as it was over, they regained their lucidity and were able to observe all kinds of details only the killers or those first on the scene could know. The text continues:
- "Then I ran into Raslan, and we went into the houses together and saw the bodies. Some had had their skulls split open as if they'd been hit with a butcher's hatchet, while others had been shot in the head, execution style, with a small hole in the front and bigger hole in the back. I counted 17 bodies all over the place in Mustafa Abdul al-Rassak's house."
- I saw massacre of children, says defecting Syrian air force officer By Martin Chulov, the Guardian, June 2, 2012
- Searching for the Truth Behind the Houla Massacre By Christoph Reuter and Abd al-Kadher Adhun. Der Spiegel English. July 23, 2012.
- Houla Syria-Houla Killing.movPublished by UNSMIS, May 27, 2012