Has the Church, the Denomination, ever made any pronouncement about this issue?
If not, it's past due!

The reason is simple: Apparently this man uses the Church's pulpit to vibrantly lecture on an issue that he is particularly passionate about. Yes, he has the right to do it, but NOT taking advantage of a church's pulpit. If he is so dedicated to his cause, why doesn't he rent a big gymnasium, advertises his theme, and go from there? It is not right for him to get in front of a slave audience and spit on them his personal views on any issue. 

He is certainly not the only one guilty. Someone invited/allowed him to deliver his lecture(s). Are they sanctioning, endorsing, promoting his views? 

If I had the time...., I would check if he has been informing the public on the neurological data available about the homosexual nature. Or is he focusing only on homosexual behavior, thus neglecting the biological aspects of the issue? (Which most "passionate" people do!)