If the GPs' DS has visitation, then I can see the GPs turning to him for access. In fact, that generally seems to me to be the best way to go, and, to my understanding, most XDILs prefer it. But if DS had no interest and was ok w/ XDIL moving far away, etc., then I don't agree w/ the GPs pressuring him into going to court, and I can barely imagine why he would give into them. Yes, I can understand their wanting to maintain contact w/ the children despite the dad/DS, and I applaud them for it. But coercing DS into pretending he's interested just to make that happen? No. And causing XDIL and the kids a lot of strife on top of it just to suit the GPs' wishes? No.