Actually, I don't see the word "homosexual" in that verse. And there is zero actual proof that the Greek word that modern Christians tend to claim means "homosexual", arsenokoitai, actually means that in Koine Greek. It is also interesting that an early church father, John the Faster, referred to a man performing arsenokoitai with his wife.
Last, the word arsenokoitai is a compound word, combining the word arsen-o (with a male modifier) meaning man with the word koitai (with a plural feminine modifier) meaning bed. It is strange that the word indicates a female's bed if the word was meant to mean homosexual sex.
Last, the problem with your idea about gays changing sexual orientation when the give themselves to Christ is that it just doesn't happen. Even among those that claim that homosexuals can change their sexual orientation, they still claim that it requires months, if not years, of hard work and various therapies for sexual orientation to change -- and that is after the homosexual has already given himself to Christ. Further, with drunkards appearing in the verse, why does this not mean that alcoholism is cured if a person truly finds Christ? Yet I've not heard a Christian claim alcoholism can be cured -- as you are trying to make these verses say about homosexuality -- merely that Christ will help them resist the temptations caused by a persons alcoholism.