I generally agree with Ice here, that said....
Sorry joe but that was extremely bush, and a SUCKER PUNCH.
Evidence is very clear in this video please pay attention starting at 50 seconds.
http://www.youtube.com/watch?v=xLnEDFaDEdA
Ward and Cullen are in a gloves on discussion/ shoving contest, likely about where they will be going to dinner tonight. Walker is the second man in on a NON fight and he comes in swinging. First with the glove on. As Ward turns to start jawing Walker has already dropped the gloves and is throwing a bomb. It is pretty clear Ward and Cullen had no intention of dropping the gloves. Walker who has a pretty extensive fight card took the opportunity to try to send a message cause his team was getting blown out. Within 3 SECONDS Walker as the second man in has hit Ward first with his glove then turns Ward and throws a ungloved fist to the face.
that said game 6 is going to be intense now. Maybe the Bs will use this for motivation. If the take game 6 then you know what they say about a game 7. I will definetly be watching game 6