I have a theory on why Pelosi an Schumer are attempting to remove the President immediately. They are both deathly afraid of what he has that he could declassify and present to the public. IF he has evidence that would incriminate the left, the DNC, HRC, FBI and all the others and IF he chooses to release it, they are sunk. Criminal prosecution would have to take place as it would be brought to bear in broad daylight.
This is the last thing the President has that could cause the SCOTUS to intervene between now and 20 January.
At this point, I think there is zero path for Trump to stay. Constitutionally he is now lame duck, on Jan 20, he is no longer president, Biden is. So if Biden is now ruled "out", Harris is in, if not Pelosi. That is the big deal about what happened yesterday, there's now no election to overturn, its over, legally.
If the SCOTUS steps in now, I have no idea what would happen, above is my guess, I haven't read anything that lays out a plan for what happens between Jan 6 and 20, but I'm pretty sure it's not Trump, he has, legally, been ruled not the president as of Jan 20. Fraud aside, that's how I think it plays.
And if he had dirt, he'd have released it already.