quelly - I completely understand your anger and on the face of it the parents action seems utterly wrong.
I don't know the parents (in fact this morning I didn't even know they were Witnesses) but I do know people that are in the same congregation in Portsmouth and have been very, very close to this situation. Having spoken to one of my friends, it is not at all clear why the parents have removed the boy from the care of the hospital but it is not a clear cut situation where all the facts have been made public. They are described as a very close and loving family but the situation with their son has put immense strain on the parents. I don't believe they are acting rationally and I also believe there are some factors associated with the boy's condition that may have triggered this action.
I just hope that the family can be found and the child and his parents can all get the support and care they need ASAP.