Its not normal to want to indulge in anal sex. The Reverend was probably raped as a youngster...probably by a man.
LOL. I think it's more normal than you think. Millions engage in consented anal sex everyday, not because they were raped as youngsters, but because they find it enjoyable. I thinik the Reverend found something he liked, hehe.
If we lived in a society that didn't feel the need to condemn other people's kinks as pathological or shameful, people like this man would have been able to enjoy himself in a safe, informed manner and most likely never got hurt.