I think Dick has been vulgar, crass, borderline obscene. He's loud and obnoxious. But out of control? No, I don't think so. I think he's perfectly in control.
His strategy is intimidation. To rattle people so they can't play the game (perform in comps, talk to other people). And he has been able to verbally intimidate everyone in the game. He hasn't gone off on Zach or Jessica, but he hasn't had to yet - there's always been another target.
I thought Jen's method of dealing with him - just smile and be nice - is probably the second best way to deal with a guy like that. The best way is just to laugh at him - although that's not easy, you'd have to keep your own temper under control. But laughing at him - to his face - would be the best way to neutralize the impact. Mike was probably the only person that's successfully turned the tables on him - making Dick genuinely mad in the POV comp so that he (Dick) gave up the POV. It didn't work out for him, obviously, but if other players had shown the courage Mike did, the game would be totally different now.
All that assumes that BB isn't just pulling all the strings anyway.