Phsical abuse is grounds for seperation on paper only.
Seperate from your wife because she was violent (police called and charges pressed and convicted) and you will be taken in the back room and told how wrong your separation is.
Seperate a second time from your violent wife because you feared for you life and locked yourself in the garage and she busted thru the door with a 10lb sledge hammer because she was 'going to make you see things my way' and you will get called into the back room with the violent person you are seperated from and told how wrong you are for seperating and how you make her behave violently and 'what is your problem '
Sure, on paper violence is grounds for separation but get the local elders to remember that.
Edit
Looking back, i guess it work out ok for me. I left the org, filed for divorce. She made all kinds of accusations to anyone who would listen. Brought her new boyfriend to the next CA even before the divorce was complete. 3 months after the divorce was remarried and df'd. IDK why but can probably assume its the getting remarried without being scripturally free to remary - adultry. So now im free to remarry both legally and (not that it matters) scripturally.