I'm pretty sure Rothleisberger and Winslow were both in violation of their contracts. Ben wasn't even wearing a helmet. I recall Reggie White also had a clause about no motorcycles. He had one, but apparently all he did was drive it around his driveway.
Eveyone should stay away from those things. It's too easy to hurt yourself and if you have kids you could really put your family in a bind if you can't work. Especially if you haven't made millions up to that point.