If he can change why hasn't he did it already, from what you have told us I don't know why you would want to endure anymore of that abuse, he sounds like all the other men I know sound when they are losing control, mind you I have been down this road so I know what you are going through and how you feel. but just remember we are here to help you and I don't want you sucked into being abused anymore than you have been.
there is a better life waiting on you but you have to be through with this one first, and the fact that you would even consider taking him back or the fact that you listen to him is a sign that maybe you are not through with him. It is a decision that only you can make, and you have to live with it either way, I don't envy you. I don't mean to sound so hard hearted it took me a few years to get that way from my own situation 25 years ago. since then he has did 4 other wives the same way or worse than me, only because we let him. That is the only way this man or anybody else can hurt you is if you let them, enough said, try to look at this as if it was your best friend going through this or your daughter going through this what you tell her to do??? would you want her to be treated this way, is this the example you want her to see, if so then go for it, either way we are still here for you....