Will a Lawyer attack a Super-Thief?

[Omelethead]

The Lawyer in the original Munchkin will not attack Thieves out of professional courtesy, and Thieves cannot still choose to fight it:

No, you may not fight Monsters that say they won't attack. So, a Thief can't fight the Lawyer, a female munchkin can't fight either the Amazon or the Psycho Squirrel.

A Super Munchkin can be either 2 classes at a time, or can be a single class with none of the disadvantages. So is the Lawyer's "Will not attack" considered a disadvantage or an advantage? Can it change? A Level 1 Super-Thief with a combat level of 2 would probably prefer not to fight. But a Level 9 Super-Thief would definitely want to fight a Lawyer that he encountered when kicking down the door. Does the Super-Thief get to choose to fight it? If he does choose to fight, and then the other Munchkins manage to help the Lawyer enough to make it win, can he then decide not to fight it? If not, could he discard the Super Munchkin card and then be forced to not fight it?