Are you saying the most expensive lawyer is telling him to pause DV for few months, and then he can resume? I would be surprised if a professional encouraged somebody to harm others. You're linking DV and immigration together, whereas from my outsider's point of view, they're not interntwined. Using this logic, wouldn't he get mad and angry if you attempted to meddle with his immigration matters? I'd think the chances of violence could have increased from him if he's a very bad person you're portraying.
Wishing you luck. Please seek safety and peace first, retaliation and everything else is secondary.
I have nothing to add here