"Judge not, let you be judged" and "For all have sinned and fall short..." are two more that come to mind. Were he trying to justify or excuse his behavior, maybe it would make sense to insist that such behavior is immoral, but he's not doing that. He confessed his transgressions (and the public doesn't deserve or require a detailed confession) and has taken steps to change his behavior. Can he change? I don't know. Have you ever sinned? Have you changed your behavior? I've sinned. I've done better at some things, and show no improvement in others. But maybe you're a lot better than I am.