That's one question, yes. Another (possibly more troubling) question is, given how obvious it is that his legs were already dead at that point, what the heck were the officers doing just shoving him into the van? If it was obvious on video that his legs were dead, then it was surely obvious to the officers moving him. Anyone with any medical training (police officers have at least some first responder training) knows that if a person presents with any numbness/loss of feeling/loss of mobility in their limbs after any sort of a trauma, that is a HUGE red flag. You don't move someone in that condition. You keep the person immobilized.
Didn’t police admit stopping to put leg irons on the suspect ? If they had to drag him into the van by his arms, maybe the cops thought he was faking resistance ? I have no idea but that is obviously against proper law enforcement procedure.