You only have 2 options:
A) Avoid a bad situation. This is family. You decide when it's worth being around or not.
B) Realize you can't change or fix this. The only good you can inject in the situation is behaving the way you believe is right/moral/justified and let the chips fall where they may.
You going to jail changes nothing and only hurts your life and family and future.
You'll be in a cage and he'll be there with your mother...
"He had no teeth, and he was slobbering all over himself. I'm thinking, 'You can have your money back, just get me out of here. Let me go be an accountant." I can't tell you how badly I wanted out of there."
Denver rookie QB John Elway, on Jack Lambert, after Lambert and the Steelers knocked Elway out of his first game as a pro (1983).