It would have been nice if his Dad had let him ring home to let you know all was OK. Perhaps your son could bring home some toenail clippings and some hair and we will help you make a voodoo doll!!!LOL Getting upset and angry, although VERY justified , is playing into their hands, and hard as it may be, you have to grit your teeth and let your ex know, firmly, that in future you would like to hear from your son to know he has arrived safely. You are doing the right thing by not saying anything negative to your son re his father and the new "set up". Given time he will make his own mind up. Good luck and hold your head HIGH. (Scream into a cushion! It helps)