Wasn't expecting to find that old post up here. Thanks for finding that BTS.
My thoughts on this are simple: I think that you limit yourself when you go all in to the group think of a church/religion. I think that there are more evolved ways to view god and spirituality. When you move past group think, you allow yourself to grow.
The 4 Stages link really does describe to me in a general way why I feel that way.