Well, don't take my advice as sage - it sounds suicidal to me, but has worked no less than 5x since I started riding about 18 months ago.

When I get hit, or start the death wobble, I grab the rear brake and lock up, and let my bike fishtail just a little bit. I find that the really forceful swing that I induced, combined with lots less speed, will kill any wobble. It's a lot easier to pull out of a purposeful fishtail than a surprise wobble.

Obviously, that's not what you want to do in a race, it slows you down, and would probably crash you into someone else, but it works fine for me in a campus setting.