Well, it's hard to say whether the actual facts have been skewed or not. I mean, some people also say that the moon landing was a hoax, but all us sane people know they're crazy...
However, just to speculate, did the video suggest what did hit the building? I know the word "missile" was shown around a lot, but it never really gave an explanation. Personally I'd like to add in that it could have been aliens, ya know, UFO's and whatnot.