*cough* That class was less meant to be played, and more meant to satisfy the challenge of the thread it was made for. As a usable class, I'm not particularly satisfied with it.
I think if I were to make the class today, and make it for actual play, I'd make it a Martial Adept base class with a recovery mechanic and extra bonuses centered around switching between Diamond Mind and Tiger Claw maneuvers to represent the character fading between seething anger and full-blown psychopathic rage.
I'd probably name it something more generic, and give it some more proficiencies (obviously). Hmmm...kinda gives me an idea.