I see this residence change thing as a capitulation. He now knows that the town he’s always considered himself the king of wants nothing more to do with him. It’s a retreat to a safe space, a place where he’s still the king.
Whatever legal dodge he hopes to accomplish with this move (and it’s Trump so it’s safe to assume there’s a dodge of some sort), the subtext is clear. Despite the Twitter bluster, he’s in retreat.
That World Series game shook the fuck out of him.