One of the things that suggests that it was self inflicted is the location of the bolt. The officers never entered the van. The door would have had to be closed for him to have slammed against it where the bolt is supposedly located.
I agree on Dr. Carson. I can’t believe all of the candidiates entering the race that have absolutely no chance of winning. In some cases, I suspect ulterior motives.
Just to be devil’s advocate: would it be possible for Freddy to have had the door slammed ON him? That is, he was told to sit down, but decided to give officers lip and was leaning out the door, when the officers forcibly slammed the door shut of his head, causing an injury?
There really are a number of possibilities.
My best guess, though, is that he was standing up and the van accelerated, causing him to fall towards the door and smash his head, hurting his neck.