The Schindlers also begged Michael to step down and let them take care of Terri. Why would he allow that, Terri may get better. The Schindlers wanted him to divorce Terri too, but he would't budge. He's never budged from the time he remembered, after he got the settlement money, that Terri wouldn't want to live this way. Or did she actually say she wanted to move away? Who knows. He only remembered it all those years later, not from the beginning!
I believe the reason MS won't turn Terri over to her parents is twofold.
#1. Trying to carry out her wishes. You may not believe him. However, several courts have found his testimony credible. Additionally, I don't know anyone who WOULD want to live this way for 15 years.
#2. I think that MS is convinced there is no hope for his wife. Court appointed doctors have said she is PVS with no hope of recovery.
#3. I think MS is trying to prevent the Schindlers from keeping their daughter alive even in the event she needs multiple amputations.
Court testimony provided by members of the Schindler family included very personal statements about their desire and intention to ensure that Theresa remain alive . . . at any and all costs. Nearly gruesome examples were given, eliciting agreement by family members that in the event Theresa should contract diabetes and subsequent gangrene in each of her limbs, they would agree to amputate each limb and would then, were she to be diagnosed with heart disease, perform open-heart surgery. Within the testimony, as part of the hypothetical presented, Schindler family members stated that even if Theresa had told them of her intention to have artificial nutrition withdrawn, they would not do it.