As MinibearRex points out Eliezer's "explanation" of how religion formed, fails to actually explain anything. Heck the "failed" just-so-story is a better explanation for how religion formed then the one Eliezer proposes in its place. I think this is a case of Eliezer being mind-killed by his hatred of religion, and thus choosing explanations based on how bad a light they cast religion in rather than any measure of their plausibility.
Today's post, A Failed Just-So Story was originally published on 05 January 2008. A summary (taken from the LW wiki):
Discuss the post here (rather than in the comments to the original post).
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