Having had concussion myself recently I would agree - it looked like a classic case and he's probably talking to the fairies just now.
Worried me though that whilst one of the medics clearly felt the same way, balanced him from behind and got him to stop, the one with 'Doctor' on his back didnt seem that concerned. My own experience says that he certainly shouldnt be allowed to come back out tonight at the very least for safety reasons but my feeling is that he will as no one will stop him.