The reality is that something happened. It was probably something like TO *****ing about not getting enough balls his way, and Witten got tired of hearing it. A fight breaks out between the two, Tony jumps in to break it up, TO thinks at the time he is standing up for Witten and gets pissed and stomps off.
I'm gonna tell you all one thing. I'm an emotional person and when I played football every single bit of emotion and energy you have is being used to extremes. In the heat of the moment things are said, punches thrown, headbutts to fellow team members without a helmet on. Point of the story is you can't be judged by what happend when you're all jacked up and already an emotional person. It's what brings out the drive and passion to be the best, but it also can rear an ugly head.