Photos on the net show the mob dragging the ambassador as armed with AKs. These are very likely the attackers.
Did not notice AK weapons but if so that would argue for them being affiliated with the attackers. However I read that the guy who took the video and perhaps some photos was identified and had a facebook page. If true that guy doesn’t sound like al qaeda. More questions than answers
All of this speculation is interesting. Perhaps more will come out. What is getting lost in all this is who is responsible for lax security on 9/11 in a muslim country? The key question is how did obama allow another 9/11 to occur on his watch. Its not like we didn’t know 9/11 was coming.