"In the 1970′s and 1980′s, in particular, there developed at certain seminaries a “gay subculture”, and at these seminaries homosexual liaisons occurred among students or between students and teachers... 

... the sexual corruption that entered into seminary training in the 1960′s and ’70′s did not come before the increase in sexual permissiveness that had taken hold of segments of ordained clergy, but rather resulted from men, already ordained as priests, bringing their attitude and lifestyle recently acquired back into the seminaries as teachers during a period of significant confusion in the Church. This sexual licentiousness occurred concurrently with a rising crisis of confidence among all clergy …

The atmosphere of disciplinary and doctrinal defiance common to the time [60's & 70's] would have encouraged confusion among the rank and file priests, and in the deviant, set sexual behaviour afoot ...”

http://epublications.marquette.edu/cgi/viewcontent.cgi?article=2265&context=lnq