I didn't see him throw a punch, all I saw was him trying to push Mankins away. So would rather have had him just let his teammate get mauled and not help him? I don't know about you but if I was his teammate, I would respect him even more cause I know he would always have my back. Should he have done it? Probably not, but I'm not gonna fault him for feeling that he should stick up for one of his teammates.
No such thing was happening. They were jawing and doing a bit of shoving. His teammate was in no danger of getting "mauled" and as I said, this was the 2nd such fight in the game that Suh involved himself in. It's something I've never seen from him before. He always just let his actions (on the field) speak for themselves. For the record, this is like a minor annoyance to me and I'd probably defend him anywhere else but here. To the post above yours, telling people not to comment if they don't have the same athletic ability as the player is always a bad argument.
Get over it. He's become the "enforcer" of sorts-as he should be.