Churchill after Gallipoli. The moment will return to the manServes out the remaining two weeks and leaves.
That first video back from his social media ban clearly shows that somebody has gotten to him. The RINOs in Congress have turned against him and his supporters and completed the electoral process. Pence has deserted him. SCOTUS threw the biggest lawsuit out on a thin standing excuse without even hearing it. He really has no friends left and no cards left to play.
If he refuses to leave, the Secret Service will probably grab him, walk him to the gate, put him out onto Pennsylvania, and lock the gate behind him. Now that the electors have voted and SCOTUS has declined to act, he won't be president anymore. Period. It really doesn't matter what he does, in real power terms he has nothing to back him up.