Its not emotional attachment, its just a habit, and a bad one at that.
Its fear of being on your own, not love, that is drawing you back to him.
It sounds like he had you well trained, and its oh, so difficult to find yourself again after years of emotional and verbal abuse.
You can do this honey. You CAN. Remember that he is the source of your pain, not a balm for it.
There is an awesome thread somewhere on here on how to detach. I hope someone can bump it. Read it and put it into practice. You will find that you are stronger than you think.
I totally feel for what you are going through.