Nah this is mostly on Punk. He decided to shoot on Page, the Bucks (and presumably Kenny), believing they were leaking info to the media. He says come talk face to face, the Bucks oblige and all hell breaks loose.
Punk starts throwing hands (not impressive if you watched his UFC "fights"), while his buddy throws a chair & goes back to grade school fighting style with hair pulling and biting.
The stuff Punk was mad about (his issues with Colt Cabana) has been public knowledge for years so his reasoning is pretty flawed. It was also very selective since other people (MJF for instance) have commented on the situation but he didn't go after them.
That's not to say the other guys don't have any blame to share. Apparently a lot of people saw the brawl go down so if it was 100% a Punk thing, the others wouldn't have been suspended. It'll be interesting to hear the full story when it eventually leaks out.