Hi, and welcome
I understand why you have this question. because exiting a marriage is not covered in the WT CD Rom, or, at Pioneer school. It's crazy that your mate can physically beat you, abuse you, but, you are are bound to him despite living far away from one another. When Jesus gave the command allowing divorce he was talking to Israelite men who had the advantage of divorcing their spouses for any reason. That is the context that gets missunderstood by the WT society. Thank goodness, the law is open minded on this. I agree with what the other posters are saying, you need a Lawyer. You don't need your mates approval, he walked out.
All the best, and it's your God given right to move-on.