"So now it is part of a plan even though there was no plan?"
You don't seem to understand the concept of definitive statements.
What part of "We don't know." and "you cannot discount the video" do you not understand? That you cannot discount the video means it may or may not have been a factor.
The attack didn't require intricate planning. It could have been thought up a week before, a day before, or possibly someone had the kernal of an idea a few months before. The video caused numerous eruptions in numerous places during the same week. It is during the same week that it was translated into Arabic.
Again, what is clear is that the security arrangements were not acceptable. And that is a message that needs to be emphasized -- particularly if Hillary Clinton runs for President.