The disappearance of the movie is probably a bit of both. I have to say that I agree with them. One of their employees DIED. I think they have the right to have the video removed and that the guard had the right to have the person stop filming. He probably knew the driver and was almost freaking out. Who knows, the driver could even have been a close relative of the guard or something like that.
I do agree with that, but I doubt that that's the only reason for pulling the video. I mean c'mon, Youtube shows a video of an Iranian girl getting shot and bleeding to death, then why would they let this be pulled if it wasn't for Disney yanking the copyright chain?