Call me cynical but what team isnt likely to protest
The only team I can see protesting at all is McLaren with them moving to Honda (and I still can't see them protesting). Everyone else relies on an engine deal related to one of the big teams (Renault being Red Bull... though that's hardly a harmonious relationship currently), so unless Ferrari don't run FRIC and those ahead of them do and they want to shaft the sport, they'll protest.
Mercedes, with their huge advantage probably won't be affected either way, and even if they were, they've enough of a lead to comfortably defend the titles anyway, so they've zero to gain from protesting.
Red Bull know their issue is the power unit, and the deficit enormous, so they'd still be behind Williams and on certain tracks Force India, so there's no point in them protesting this season.
It won't happen, but even if a team was tempted to protest, it would be too damaging for the sport if half the grid is disqualified or penalised, and Bernie won't let it happen. Indy 2005 was damaging, but that was a safety issue, and while Ferrari and Jordan could have potentially changed that (had Charlie Whiting agreed), it was still a safety issue being the root cause.
It'll all blow over after the weekend, agreement or not.