Mine used to be the "general disdain for organized religion, actual anger reserved for political fundamentalism" variety, but he's turned into the "open hostility to all religion" type.

Honestly, I think some of it may be hedging after saying things particularly disparaging of Islam. Sort of an "I'm not racist, I hate all religions!" thing. It's usually things in the news that set him off: articles on Middle East violence and/or corruption, child-molesting Catholic priests, and right-wing fundamentalists light the fuse.