My state is MD. My mother added me and my ex boyfriend to her condo deed back in 2009. We stayed there for a couple months until moving out. Unfortunately we never had the deed fixed and he has remained on the deed ever since. I haven’t been in contact since 2010 but now my mother is going through a short sale of the condo. In order for the settlement to occur we need my ex boyfriend to sign the quitclaim deed. He is asking us to pay him $5k in exchange for his signature. What are my option in not having to pay this blackmail?