The only point I'd correct you on is the fact that the entire Cyberverse wasn't really against them. Things were roughly evenly matched. Certainly they'd be at a disadvantage, but this wasn't a ditching-BAPS sorta thing.
Oh, and they'd be fighting an enemy who would certainly have provided very fair, even generous, terms. There would be no EZI. There would be no alliance ending. There would be, at most, some reparations and military deduction for a few months.
Basically, the toilet bowl voided their honor and word to avoid a moderately rough situation.
Legion, GATO, ODN, and hordes more of "crap" alliances > Continuum alliances