I think nobody can predict what Trump is going to do, as a badly outflanked Ted Cruz commented in debates before 2016. Ted Cruz is no fool, so he seemed to be clearly impressed by Trump's strategic foresight.
Trump may have intimidated the swamp into NOT arresting him after he bated them over and over to do it. They may have figured out that getting arrested was part of a game plan that they didn't want to explore. They were DYING to arrest him, but stopped short of lighting the fuse so far.
There are plenty of Liberals who would love to see him do the Perp walk.