My best friend truly hates his mother and wants to emancipate her (not his dad though) or he wants his dad to have sole custody of him (they are not divorced) can this happen?

I don’t need any information on how to make this relationship to work because it won’t. I need to find a way for his mother to have no control of him whatsoever and have his dad be his legal guardian. He also does not want to inherit her debt either so is there anyway about dealing that? Here is the story behind it (if it helps). His mom is very immature and throws things when she gets mad, and she takes money that he has earned from his job, she takes his computer and looks up pornography and he got a virus from it. She is verbaly abusive to him and his dad is doing whatever he can to keep peace.