Good point, they were highly fanatic. Whatsmore, at this point no doubt the True Sith would have intervened and taken over.
That's actually a good point. I'm sure the Emperor was keeping tabs on the Mandalorians and would started to move in if his minions were doing well. Then we would see the Jedi go to war. This is what they were waiting for, but I don't think the Jedi would have much of a chance once the Sith Empire steps in.