Maybe Morris Dees is trying to hedge his bets. Perhaps he figures come Judgment Day, he can always argue that well, sure, maybe he misled all those senile old people into funding his wife's expensive knicknack collecting mania, but he gave everybody plenty of hints that the SPLC is evil.
By the way, Obama's new AttackWatch site looks like it was designed by interns at the design firm that did HateWatch: similar in intention, but more puerile, more easy Nurembergish black-white-red than the SPLC's Leningradish gray-white-red.