Yeah, this is one of those confusing elements in Scriptures… the best I can gather is that the Church should reject such acts and excommunicate the perpetrator in hopes that he/she would see the Light and turn from the wickedness that they are committing.
Sadly, human emo takes over and we play the 3 monkeys game (something that the Church continues to wrestle with); goodwill does not change the heart/mind of those who go astray; there comes a time when the sinner must be corrected and purged from the Body in order to Save him/her and the Body.
Maran atha!
Angel