Two possibilities come to mind...
The feds made the video themselves at the last minute to cover their arse after all hell broke loose across the planet ...
Walid Shoebat was right and the guy who made the video was not a mere "coptic Christian" or jew as advertised but a member of the PLO. The video was created as a devised excuse to have mass demonstrations in several countries as a diversion permitting a real attack in the one place where no demonstrations about the video took place, and maybe these demonstrations in Sudan and such served to draw our drones away from the real target in Benghazi.
Ironically (or not) almost no one in Cairo ever heard of the ‘video’ even though the Cairo embassy was Tweeting frantic apologies for it all day Sept. 11th from the early morning hours before the protests even began. Ending with the last Tweet from the Cairo embassy Twitter account from Hillary herself in the early morning hours of Sept. 12th about the same time Woods, Doherty and the others were under heavy assault at the CIA ‘annex.’