Before the Democrats take Trump off the ballot one way or the other, they will demand the Republicans do it for them.
In Nixon’s case he departed when the Republicans went to him and told him the game was up, the votes were there to impeach him, so Nixon resigned.
In Trump’s case, the media and Democrats will demand the Republicans remove him from the primary process, basically the argument will be, you can’t allow a charged and possibly convicted felon to run for POTUS from one of the two major parties and certainly you can’t nominate someone like that.
There will be a significant percentage of Republicans that will go along with this demand, they don’t like Trump anyway so it’s not a stretch at the first opportunity they will attempt to remove him.
And ‘ronna’ and the gopE are in a position to ensure he isn’t placed on the ballot. At least as a republicrat.
And they will gladly fo it and then put in the Deep States boy, Glen Youngkin who was handpicked to run for VA Gov (the State GOpP) changed the rules to keep a MAGA gal from running, and have him tout a few MAGA positions, like they did with DeSantis, then package him as Trump without the problems. Viola, Paul Ryan, Kevin McCarthy, Mitch and the rest of the anti-Trump establishment will have righted their ship. Back to business as usual.