Why is there nothing you can do? As you said, you have EVERY legal right to him and your biological son. That is what courts of law and family services are for.
If they are feeling as miserable as they are making it out to be, do you think there is emotional abuse going on there? Can't you ask for a check on them? If you are not comfortable doing that (and they do not have to tell them who asked for the check) then contact the court. Get a custody revision. The kids can testify if you are ok with that. They can do it in the privacy of the judges chambers instead of open court. This is about their wellbeing, not your XW's stupid notions.
Yes, she put them in this sitiuation, but you don't have to let them stay there.
T19 M15 S19 XH47 M43 bomb12/4/07 PA5/07 S12/26/07 D final 11/17/08 Back together with no defined R 05/2010 confused....to say the least!!!