Lay low, start chipping away at the bottom of the board into reds territory, about one or two a round. it appears that red is focusing on killing green. Let him do that eventually you'll gain enough strength that you can just attack red head on but for now just chip away.

Could the said busted multi have his men turn neutral? That seems like it would be a more fair option if you ask me.
I don't think there is a truly fair option.


I am sorry if a cheater is found, then they should not get any rewards for him. You choose your partners so pick better next time ...