Face it - Assad cannot realistically hope to put the sunni genie back into the bottle.
The western military intervention, a blessing in disguise, may speed up his inevitable defeat. Partitioning of Syria along the ethnic lines will help avoid the prolonged national misery.
Luttwak on Syria,
http://www.nytimes.com/2013/08/25/opinion/sunday/in-syria-america-loses-if-either-side-wins.html
America loses either way...
Assad was a reputable player but the man is in a trap now. His modern army is incapable of defeating the rebels and he cannot possibly negotiate because that would mean exile and teh end of his personal power.
I am pretty sure there is a growing realization within the regime that Assad needs to be replaced. Not to win the war, which is impossible in a country effectively split in two, but to negotiate a partition acceptable to alawites.
I think the Pentagon just goes along to get along at this point. The US foreign policy establishment is run by ideologues, and I'm betting it's heavily weighted with women and homosexuals.