I'd like to know a little bit more about the whole situation... What does he do to cause your mood swings? Is it specific actions that you can pin down? I definitely agree that you need to decide what you want out of this marriage... a divorce or to save it. And then determine your actions accordingly. If you truly want the relationship to end, then look into staying with friends or relatives, or even a hotel. If you want to save it, then you should try to get into couples counseling. If he seems reluctant to go, like "It's not MY problem" type deal, then say it's for your benefit, and it would help you if he went with you.

Personally, I'm a little concerned that he felt the need to lock the door and put a dresser in front of it. Personally, I see that as putting his own life in a bit of danger -- what if there had been a fire or something, would he be able to get out in time? Why would he feel the need to go to that extreme?

I also agree that you should keep working with your therapist and pdoc to get you into as safe a mindset as possible. I hope I didn't come off as harsh, but I'm worried for everyone's safety in this situation. You do need to take care of yourself as your number on priority. I hope things will work out Please take care.