I would do whats right for your son, and forget about everyone else,,no one else is thinking clearly on this and regardless, you will be held relaible for your son since he is a minor so i would protect yourself and your son, and for the rest let the chips fall where they may.. in a situation like this ..no one is going to be happy, your ex will be upset, so will your son,,but so what? do what you know is right for your son and for you...