Eh...
Suh was on the ground basically wrestling with the Green Bay player - both of them not wanting to move their arm and let the other guy up first. Suh bounces up, another GB player comes in and shoves him in the back and Suh gives a going away kick as he's falling away.
This just doesn't look that bad to me. He looks like he was irritated that he got shoved after having a scuffle on the ground and gave a cheap shot on the way out. If he had wanted to stomp the guy with intent to injure he'd have turned around and put his weight into it a few seconds later.
He gave a frustration "kick" to the guy on the ground, knowing it might hit him but also knowing he wasn't going to get too much pop behind it. Suh's got some anger issues on the field but it's not the big deal some of you are making it out to be. He should get a punishment. It shouldn't be too harsh. Heck, most of his "reputation" came from the oversensitive nature of the calls involving QBs, anyway.
It was a cheap shot. A minor one, though. Not nearly as bad as looking at someone's crotch, pivoting a smidge to have a better angle at the crotch and then letting loose a kick as hard as you can at the crotch. Not nearly as bad as taking off a guys helmet, standing over him while looking down and then raking your cleats across the guys face near the eye (30 stitches worth of cuts, I believe).