Then he was no longer under the control of the RCC and didnt have to abide by any vows to it. And dont try to tell me that his vows were to God. False teachings of the RCC do not put a person under obligation to anyone other then the RCC.
Well, yes. It is a bit like saying: since he is convicted of murder we do not have to worry about him cheating when counting change. He sure was not freed from simple decency of respecting the chastity of a woman especially one he probably loved, and she was not free to marry.