So next time, go for a rebellion. IIRC, if you're rebelled against you lose your Royal title even if you're not outright banned by the rebels afterwards.
Are you sure?
I'm pretty sure that if the ruler abdicates willingly, it's quite different than if he is defeated. I'm not sure for what aspects, though. I know you can't reform the government if he steps down, and I'm under the impression he isn't auto-banned either, and wouldn't be surprised if he kept his royal title.
