I don't know. They've really taken Sam past the point of no return this time and all prior experience suggests that they like hitting that point and then slapping some quick fix on it. It's like when they totally destroyed Dean in "Head of A Pin" and then promised that the next episode would give him a real "shot in the arm," which turned out to be a stupid, shallow speech from heaven's douchebaggiest angel. If this team had ever given me an evidence that they know how to clean up their messes, I might have liked the episode, but they haven't done so to date.