Getting thrown in the brig or left on a planet, as far as I understand it. Those would be the other choices.

[Or mutiny, but Armin's not about to introduce that topic in a crowded room full of so many witnesses. He doesn't even know if Duo would agree.]

Give it time. A bunch of people together like this with no incentive to get along aside from being told to... it could get dangerous fast, especially if people find something big to disagree on.