I'm reading another article that says
Karla Austin, one of the passengers, told CNN: "He said if you're Christian, raise your hand. If you're not, you're crazy."
Tim Wagner, an American Airlines spokesman, said yesterday the pilot had not meant to imply that non-Christians were crazy but was referring to "the people who had stuck up their hands at the risk of embarrassing themselves".
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Here's a link to that article
http://www.guardian.co.uk/usa/story/0,12271,1144607,00.html