Okay.
I'll make this easy.
She is NOT his wife under STATE LAW! Period. No quibbling.
A small fact is that he left Terry (6) six years into her coma to be with another person is little reported. Even widows and widowers remarry.
The guy got ON with his life after something crappy happened to him and his wife. Too bad her parents can't.
She is his wife and he is a bigamist.
The fact is that he didn't. If he'd got ON with his life he would have relinquished control of Terri's care to her parents. A parent's love for a child never dies, and lasts long after a lover or husband's love has gone.