Glenn, I have given this some thought, but not much as yet. Just off the top of my head I would say that it is the Electoral College’s place to say who is president. And if Trump disputes its decision a suit would go straight to the Supreme Court and adjudicated in record time. Where upon he would be physically removed from office by officers of the justice department.
But in reality, and I don’t exactly know how, but I doubt it will ever get that far.