Trump wasn't removed. They took a shot, missed it and he got worse. If you make the shot and get the big charges he becomes useless.
They only follow him because he is promising to give the repubs whatever he wants. Take that ability away and he becomes useless. Nobody follows him because they admire him or because he has a plan. They follow because he makes a lot of promises. If they can connect him to bigger charges than obstruction, he loses the smart part of the party who run to the next guy. He'll still have the MTGs and the Cawthorns of the world, but they can be handled in time