Church is filled with sinners. Always was and always will be. How is gays who keep having sex any different than the barber that cheats on his wife saturday night and sits in the front row on sunday? Or the man in the back that sold drugs the night before? Should all who repent yet keep on keepin on be banned from church?
As a matter of fact, Paul said to do exactly that. There was the man who was living with his stepmother (presumably his father married a woman much younger than himself. Paul said that he should be thrown out.
1 Cor. 5:1 It is actually reported that there is sexual immorality among you, and of a kind that does not occur even among pagans: A man has his father�s wife.
2 And you are proud! Shouldn�t you rather have been filled with grief and have put out of your fellowship the man who did this?
A practicing homosexual is no different than a church member who's cheating on his wife and they should be treated exactly the same. They should be made aware that their acts are sinful and won't be tolerated by the church. Paul gave a series of steps to take to deal with these things with ejection from the church being the final step.
