Watching the "amazing atheist" I could just picture Christians judging him for sipping wine and cussing and proclaim that he had a "demon".
I don't know if it's the same guy - but someone going under the moniker 'The Amazing Atheist' is currently being taken to task in the Atheist blogosphere for being an asshole. For example, here is PZ Myers.
For a more 'mainstream' atheist explanation for atheist anger: