Is There Any Way To Remove My Dad's Name From The House?

Throw away account. I'm 17 and I would like to plead for any legal advice regarding the deeds of the house. To simplify:

My parents are not legally married but have separated a long time ago, however the law in Ireland recognises then as a separated couple.

The mortgage is under both my parent's name, however my dad has never paid a single bill, nor mortgage, it was all my mom.

We've contacted a solicitor and they say the only way to remove his name is to open a new mortgage and have him sign a contract that he's willing to remove his name, knowing him he's not going to do that so easily as it gives him power over us. Any legal advice on what to do?

Here are some extra details if it can help with the case: My parents are separated but still live under the same roof, my mother has moved on with a new partner, and my father chastises and even threatens to hurt him or anyone else in the family. He has tried to SA my mother multiple times, and has violent tendencies and even threw objects at me whenever he gets drunk (almost every night). He's unemployed and steals our money, including mine to gamble. I have evidence of walls he has broken and recordings of him arguing with my mother.

My mom fears any legal procedures as she's worried the neighbours and our small community will find out. She also feels guilt as my dad developed anxiety and depression as a result of her moving on. Recently, however, we found out he has had an affair partner for over a year, and despite that he still chastises my mother for having a new partner. I believe it's time for legal procedures as we're worried his new partner my convince him to not sign the contract.

I'd like to go to a solicitor and carry the procedure without him (nor my mom preferably), I have a brother who is of legal age so he'll accompany me. I fear that my mom or my life is in danger, as he has threatened to kill almost every time they get into an argument.