many of his actions as pointed out here are unislamic but that does not mean he isn't a muslim. what he believes is between himself and god. however he MUST be condemned for calling on people to do unislamic things, especially since he does it in the name of allah.
____________________________________________

"Nations deny causality by ascribing blame to other terrorists, rogue nations, and so on. Singling out an enemy, we short-circuit the introspection necessary to see our own karmic responsibility for the terrible acts that have befallen us. Until we own causes we bear responsibility for, in this case in the Middle East, last week's violence will make no more sense than an earthquake or cyclone, except that in its human origin it turns us toward rage and revenge."
- part of a recent statement from the Buddhist Peace Fellowship