In a sense, this is obviously the case; anyone who is still trying to convince people of the reality of evolution is clearly struggling with spiritual issues. It's just that those issues are the ones held by creationists, who insist upon explaining every phenomenon by reference to the "spiritual".
The implication in the OP though, that anyone striving to promote evolution is actually undergoing some inner struggle with the spiritual realm that they secretly know to be true, seems rather arrogant. It presupposes that anyone who is not a practising Christian is somehow in denial of reality, clearly not the case if atheists like myself are correct.
Evolution is not merely a way of rationalising away the god of the Old Testament. For (I suspect) the majority of scientists the ToE has no spiritual implications at all, it is simply one of the main tools of modern biology.
Evolution and the religious/spiritual are only in conflict if one insists upon a literal interpretation of Genesis and a few other Bible passages. Otherwise, neither really touches upon the other.
As for Larry Jones' website, in my view it contains the usual mixture of misinformation and emotional blackmail that is common to such creationist sites.
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