That's hard to understand since at best he's an apostate Muslim who, according to the Koran, should be put to death. Or maybe they doubt the sincerity of Christianity?
I have been noticing a common theme lately.
http://www.commondreams.org/archive/2008/06/30/9983/
http://www.commondreams.org/archive/2008/06/28/9956/
At least three articles about the same thing.