I do not believe Syria will leave the facilities in the Bekaa valley they've controlled since the 80's, not willingly at least. They have far too much money invested in the place, and it would devolve to complete control by Iranian-funded Hezbollah, not the best of neighbors for even the Syrians. They will attempt to maintain their intelligence facilities and de facto control even if their troops make a show of departing. And we may well be brought into indirect conflict with Iran in taking on Hezbollah - that isn't outside the realm of possibility.
If they won't leave on their own, then the U.S. Marines ought to escort them into the closest sea!!!!!!!!!!!!
Hassad has assured us that it is only a Media Building, you know, for PR and stuff. They don't do any "Terrorist" stuff there.