Unfortunately I think the guy who got battered is the guy telling his thuggish colleague to lay off.
I think the actual guy who did it can be seem getting away down the tunnel @ 1:05.
I hope the kid gets punished, and I hope so does the steward. Don't want to see that happening at my club.
I don't know exactly what happened and if it was as bad as this, but like someone else has said this kind of thing can start a riot.
Observe: