The claim was that he hit his head on a bolt that caused a lethal injury. Supposedly that came from the med. examiner’s office. I don’t know if that’s rumor or true but where are any bolts projecting out far enough to cause injury?
As for breaking his neck by thrashing around I would think it would be possible from either a rough ride or from throwing himself around. Some Fox News doctor said it wasn’t possible to break his neck by throwing himself around in there. I don’t believe that. People break their necks from a lot less.
Could his neck have been broken from being tossed into the van and the thumping heard was him just flopping around?
I agree the neck can easily be broken inadvertently. A couple of years ago, I found my neck was severely strained just from sleeping. It literally felt like it was almost broken it was that painful and stiff.