Does anyone actually feel that he was a real threat after the second punch though? (or after the first one?). I think it's excessive because putting someone down for good isn't the same as neutralising a rowdy drunk outside of a club (which is what he's paid for, not protecting the public from drunks).
Nah he wasn't, I also get the impression that the bouncer had other things on his mind. Like the big crowd. So from his perspective it might have been as simple as bloody hell this trouble maker is back, without really noticing or giving much though as to what kind of condition he is in.
Kid had ample opportunity to stay down, walk away. Pretty sure his mates even tried to drag him away.
Kid made bad choices.