experienced attorney with seller finance/buyout in ohio

[Jason Herbst]

helping out a friend with a problem and looking for the right advice or direction to go. quick rundown she owns a house with now an ex boyfriend. she assumed and was the only one that applied for the loan and he went on the deed. except the broker had him sign something at closing that ended up putting him on the loan so how. the mortgage was sold to another company and they say and show him on the loan. he wont really budge on just walking away incase she defaults and wants equity out of a sale. we're trying to keep her in the house and write a deal for him to walk away. 

is this something a good attorney can handle to write up some offers? i was told her give him 3 options to choose. pretty much seller finance his equity and off the deed when agreed debt is met. get a loan for X amount onetime payment or last resort cashout refi and pay him off but she prob cant afford that with new rates.