Look, we need to be honest here. Nesta was a hard-headed bully, plain and simple. There might have been a few times when he fought guys "because they wre smiling and laughing after losses", but that's more of an excuse than anything. He bullied Tommy Kennedy on the first day he got to campus, and that guy wasn't "smiling and laughing after losses".
I don't give a **** if Nesta's anger and bullying were semi-occasionally "good things", he was still a problem on the team, even if he sometimes gave us a great play on the field (the brutal sack of Jordan Travis, for example).