Actually, quite a few catholic men are married. Some are even former priests.
No, he did not give up his faith. He did the next best thing he could do. He loved this woman and joined a church that would allow him to serve God and remain a Christian.
You don't have to be a priest to serve God, the Catholic church offers many ways. The difference between Catholics and Episcopalians has been called an inch wide (liturgy looks the same) but miles deep (serious doctrinal differences). So, he has certainly left his faith, though hopefully not his faith in God. I've known several Catholic Priests who have gone Epi. They haven't all been troubled souls. Best wishes to Mr. Curie in the future.