Under the RNC rules, Trump cannot be forced from the ticket once he received the party’s nomination. He can leave voluntarily, but if he doesn’t want to go, he can’t be forced to. Even if he shot somebody in cold blood at noon on Fifth Avenue. Even if he raped a small child on the steps of the Lincoln Memorial in broad daylight. Even if he did anything that caused him to be put behind bars.
Which means that the Republicans must deal with the monster they enabled. Even if the scariest thing about this is that no matter what he does and no matter what he says, an alarming number of people who have apparently lost all critical thinking skills continue to worship him.