Bipolar rage is usually connected to a mood state but you say you are just fine until something outside of you pisses you off to the point that you are screaming, yelling, throwing stuff and even pounding your things with a hammer. It's seems that it takes very little to make to go from fine to screaming and that does not suggest bipolar rage but anger management problems. You said you went to one anger management place years ago and it was awful. Perhaps things have changed since then and you could find a place that could help you learn better coping skills. But if the smashing, and screaming work for you then you don't need to . But all your posts here didn't sound like bipolar, they sound like anger management.