Going by some of the reasoning people are using here, should the bouncer have floored everyone around him, just in case one of them attacked him or was armed? The very fact that the bouncer wasn't attacked with a weapon or by the lad's mates shows there was no credible threat to his safety.
This was still somebody's son laying unconscious in the road after getting "what he deserved".
Well as far as I am aware not everyone WAS attacking the bouncer, he only floored the guy that was.
I believe that the bouncer showed a remarkable amount of self control over his actions. Adrenalin racing through his veins, the fight or flight response kicking in and he did the minimum to ensure that the assailant (which he was) doesn't get back up.
In reference to this being somebody else's son, this could be said of anyone involved in that melee and emotion adds zero weight to any reasonable conclusion.
Have I been out before and drank excessively? Yes
Have I been negligent and beyond smashed? Also yes
Have I been involved in a fight or felt that I wanted to get myself involved in a fight on the back end of it? No
Idiots will be idiots, and forget what this guy deserved, he got what he needed, and hopefully once he sobers up in hospital he realizes that perhaps he should refrain from being an idiot, and if its 100% the result of alcohol, maybe he should be more responsible next time.