There are a multitude of contingencies.
The desired course is, obviously, one where society is allowed to make the transition as peacefully as possible. "To succeed in this evolution" as we would put it in the military.
President Trump being assassinated would create turmoil and chaos - but the movement behind President Trump, inside and outside the government, is far larger than can be brought down by the death of a single man.
The goal is the reveal of the truth and the execution of justice. What is playing out now is a manner in which this can all be done legally and, even theatrically as the lies are slowly exposed and the drama builds to a point where the whole basis of outrage on the left is taken out from under them, while many of the misunderstandings from people on the right can also be pieced through.
I do not know how practical that plan is if POTUS were to end up being harmed, but I imagine they have ways of recovering from such an obvious play by opfor.
Even so, if some kind of catastrophic loss were to happen that prevented a peaceful and legal means of doing this - there are more primitive and costly ways of getting through this evolution.
It isn't an option, really. This is going to happen. Nothing stops it. The "form of the destroyer" is just dependent on how well blufor and opfor play.