I have no idea what is true and what isn't, it's all perfectly plausible though.
I guess we'll never know the full story unless Dean comes out and says it's all true and he's sorry, because these are allegations in divorce proceedings, she has not pressed criminal charges, so there's not going to be a proper investigation. And I seriously doubt he's going to throw his hands up and say sorry, because the settlement is going to take into account his actions. His lawyers are probably screaming at him not to say a word.
In any case, I am quite capable of being horribly disappointed in Dean as a human being, but still enjoying his guitar playing. As others have pointed out, this kind of behaviour is rife throughout the world of rock. I seriously doubt there is a single person here who doesn't listen to a band containing at least one member who is an abusive alcoholic, so getting up on our high horses just seems ridiculous. Scott pled guilty and has a criminal conviction for domestic battery, and that didn't stop me listening to STP either.
I could completely understand if STP broke up over this, but if they don't I'll continue to enjoy their future music exactly as I have done before.