I thought it was a hit from the beginning.
I also think the video was made on purpose ahead of time so it would be ready to go as an excuse.
I think you are right about the video. It was created for just such a purpose. The internet is loaded with audios and videos that would upset Jihadis more than that Youtube. In an attempt to understand Islam I have listened to a number of American pastors dissect their barbaric stoneage cult. Honest pastors say things that are very direct, certainly more upsetting from an Islamic point of view than that stupid video.