There is also the option that the orange menace just refuses to leave the building.

That he declares all election results rigged, and then offers zero proof again other than his word, and so just refuses to leave.

And appoints his loyalists to not allow the actually elected new Prez to step into the building.

I agree that he isn't long for this world, but assuming that the very large amount of medical care that would be used on him keeps him alive past his arteries and brain disfunction, might he just refuse to go.

He ignores all punishment. The judicial system is clearly a toothless tiger. That has been demonstrated thanks to wankers like Merrit Garland who is the main reason the USA is in the current mess.

Would Trump's SS remove their fuhrer?