I couldn't find specifics about his purple heart. He was in a vehicle hit by an IED. However, that could mean he bumped his head on the side of the unit, hurt his knew tripping over an injured man. It mentions nothing of the actual wound.
Either way, an injury in a combat zone qualifies him for the medal so I applaud that he was there. He still broke military chain of command and that puts him on the B list.
We're just lucky he wasn't captured by the enemy as he probably would have sang his heart out about military planning and strategy.