Leave this man alone, no person can withstand this kind of ridicule. I'm sure he knows his faults without all of you pointing them out. Do you want to drive him to a place of ending his own life? A man made mistakes and is trying to right them, let him do that without your constant criticism. Be Jesus in a world that doesn't know Him for once.
Please read the bible on how God deals with unrepentant leaders. Look at Saul, and Aaron's sons who did not follow God's laws and were struck dead I could give many more examples. Please understand that a pastor is God's representative to His people and God takes that role very seriously. God sees everyone's hearts and if they repent of their sin and that means making right all the wrongs you have committed and start doing what is right in God's eyes then there is forgiveness. Then there is the separate issue of consequences of sin .If there is no true repentance then there is judgment from God. God does not tolerate someone claiming to be His representative and them living a life of unrepentant sin and neither should we. It is not our job throw stones, just to recognize sin and have no part of it or with the person claiming to be a Christian but living a life opposite of Christianity.
But now I have written to you not to keep company with anyone named a brother, who is sexually immoral, or covetous, or an idolater, or a reviler, or a drunkard, or an extortioner—not even to eat with such a person.
12 For what have I to do with judging those also who are outside? Do you not judge those who are inside? 13 But those who are outside God judges. Therefore “put away from yourselves the evil person.