Unfortunatly you need the hypocrisy of religion to be immoral if you're an inherently moral person.

Sorry.

Most people are born into a religion, nominally at least, and for most people the reason for leaving it it lack of evidence, but the motivation for leaving it, is usually moral repugnance at the poor moral values of religion. And since leaving it takes effort and thought, plus has often a real price, I have generally found that sceptics tend to be very moral people.

Claim to be a Christian, when you're actually not. It's all downhill from there. I think these are the ones you've been hearing about.