My brother has recently split with his DP
He moved in with her almost immediately. The house was jointly owned by her and her ex even though they'd been split for a few years. About 3 months later, she told him that she was so far behind with the mortgage (not to mention council tax, water, electricity, and gas was cut off) she had a 7 day repossession letter from her lender. My brother phoned them and arranged massive overpayments so that she didn't lose the house. He also bailed her out of the rest of her arrears with various companies. She hadn't previously been debt-free for over 5 years (since her ex left). They have since re-mortgaged the house to renovate it, and to get her ex off the mortgage, so it's now in joint names. My brother has done all of the work on the house himself (apart from gas which needed Corge registered people)
Now that they've split, she's refusing to sell the house and insists she's keeping it but there's no way she can afford it. My brother just wants his name off the mortgage, he's happy to walk away with nothing, but he really does want to get his name off because he knows that if she refuses to sell and tries to keep it she'll end up in a mess with everything again and it'll be repossessed. Which of course means he's blacklisted
Is there anything he can do?