At first I had a similar negative reaction to Steph's statements about matter and energy being the only modes of existence, and especially did not like the "consciousness without matter" argument. I wondered: "How does he know these things?" Then when he said that "saying that God exists outside of space and time is [practically] the same as saying that he doesn't exist..." that stuck a chord with me.
We cannot detect God when he is outside of the material world. If he does exist then he will have to reveal himself to us in the material realm. It seems to me that he does not want to be clearly understood because if he did, he would make his existence and will known in a clear way to everyone. The revelation passed down to us in various books is contradictory and thus unusable.
I think that while there may be some sort of anchor or final level of existence, there is nothing to be said about it. If it's a God, he keeps to himself and religion is bunk, if its not a God but something unconscious, then religion is bunk.