Thanks for the mention of Damian. It led me to a piece where the following was cited (see below). I recommend it highly, as it mentions Damian and the Liber Gomorrhianus and how then Pope Leo went easy on the offending clerics and chose not to clean house. Seems like this problem has been hanging around forever. 

"Roman Catholic Clericalism, Religious Duress, and Clergy Sexual Abuse" by Thomas P. Doyle, January 2003.