Note: The blow has OOC elements.
While it eases my concerns, I really can't see why those nations cannot play the game in the alliance into which they were recruited. I may suggest to you, that they may easily lose interest to play the game, if they cannot play it on the terms which they desired to, when they joined. To elaborate, if they cannot stay within their chosen community - which I think would be important for a lot of them, because this community has OOC origins - I think they may just quit the game.
/OCC
It would have been much better IMO if you chose to solve this issue diplomatically. I am sure you could come to some kind of an understanding with the leaders of Jarheads.