I think one poster was suggesting that you leave for a bit to give a wake up call. Personally, I'd advise against this. I don't think it's ever a good idea to leave with the intent of returning just to teach someone a lesson.
I've seen this a lot and more often than not, the lesson learned is "I can behave however I want and as long as I shape up for awhile after, she'll come back".
Either the relationship is worth salvaging or it isn't. Sure, sometimes people reconnect after a break up, but that shouldn't be the intent.
This tactic will almost undoubtedly exacerbate the problem and create a cycle of controlling behavior and emotional harm (for both parties).