Islam is a decidedly AntiChristian faith. Don't know if Mo' was the AntiChrist (false Christ) but he was AN antiChrist because he has led the flock astray.
Islam is the only religion in the world that acknowledges the existence of Jesus Christ yet denies His divinity, denies His crucifixtion, and denies His ressurection.
Islam cannot undergo a reformation movement because Mohammed was the "last prophet". Those who attempt to defang Islam are considered unbelievers and mere mortals messing with the "true faith".
The only reformation option for muslims is to reject Mohammed's bastardized Bible and return to the original text either accepting Jesus and following Christianity or sticking to the Old Testament as Jews.