hope that you can offer money at an altar and get it removed, even with the curse not saying that a particular goddess can help
or, go up to the shop (or go down and buy things and hope for a portal to the shop), sell your restraints for money, then pay to remove bondage.
or later on, the shop between levels will sell a very expensive item that can uncurse anything
or, if it's a weak enough curse (you can't tell I think), raise your mana to that point