No, I call BS on the conspiratorial switching of the explanations. I'd love to see the video, though. Got a link?
Here is a link to a page with a lot of the history.
http://www.whatreallyhappened.com/RANCHO/CRASH/TWA/CIAVIDEO/ciavideo.html
They changed it almost immediately after having months to prepare it and then the FBI tried to change it again.