Um. Really?
I agree with traveler, who responded to this with, "I still think the invitation is a dumb idea. As a Humanist, I won’t back down from confrontation but neither do I invite it needlessly. I think it is telling that @klowanj thought that the invitation was 'a lot of fun to write.'"
And kudos to the Friendly Atheist! An insightful response to this as usual.
The National Atheist Party tries to put out this PR nightmare...too late.