Well, I don't think they can afford to lose Renault. This way they'll get their punishment tacked on to this season, next season is a clean slate.
Next season though, I think Bernie wants 14 teams in it, BMW Sauber are 'on the bubble' for now, so I guess there'll be 28 cars on the grid next year?
With new cash, BMW will stay I think.
With those 2 gone, I can't see the council imposing as serious a penalty as what they may have, if they'd still be employed and denying it.