I read something earlier that the man's bio father knew that his parents had done this, and he felt it was for the best, as he and the bio mother were in no position to raise the kid. The grandparents had cared for him from the time he was six months old, and just out of the blue mom decided she was going to take him away from the only home and normalcy he had ever known.
I am not saying the grandparents are faultless, but I will say from personal experience that the law rarely protects the child in situations like this. I would have been much better off if my grandmother had said screw the courts and run away with me. And she told me two days before she died that her only regret was not doing so. And the fact that this mother seems more interested in attention whoring (methinks somebody is hoping to sell the story to Lifetime), than just going to see the kid, sits very uneasily with me.