Bishop Casey was actually quite popular and many of his parishioners felt that (after a due period of repentance and exile) he should have been allowed back in some humble capacity.  Instead he was dealt with quite vindictively by the Authorities.  I suppose you could argue that "if you live by the sword..." but perhaps the Church was alarmed by the forgiving attitude of most people towards a Bishop who had broken the vow of celibacy.

notes from no w here