I guess the Muslim who tipped off the UK plane bombing plot wasn't a Muslim...
By that logic, Rudolph Hess was not a Nazi?
He endangered fellow Muslims to protect the infidel, so he was already on his first steps down the path to being a non-Muslim.
Islam and free, modern civilization are incompatible. Islam will always seek to convert the world - it follows the same logic as Communism, that only a world revolution will suffice. Even if we were to isolate the Muslim countries and prevent any contact between Muslims and the civilized world, they would find a way to take offense and try to attack us. It's all or nothing, I'm afraid. This world ain't big enough for the both of us.
You mean the Pakistani that tipped them off? Possibly he doesn't consider himself a Muslim. Certainly not a "Good Muslim" by his friends standards.