Now, if you guys read his book, a lot of things came to my mind from it. For example there was a part in which he says that for some part of his early days in LA he would slap people for any little thing while he was going out with Charlie Mack. He would get upset they would call him "soft" so he was getting in a lot of fights.
Also brings to mind all his talk in the book about "the coward". I think after he saw Jada "hurted", he felt like he needed to prove to himself and everyone that he is not "the coward". He just did it the wrong way.