Can the SCOTUS undo DC statehood?

[True Federalist (진정한 연방 주의자)]

It's well established by the precedent of the Alexandria retrocession that Federal district need not be its maximum allowed size and that it can be shrunk. The only quasi-plausible reason SCOTUS could give to block it would be to assert that the territory surrendered to form the district can only be retroceded, but even then, if Maryland were to consent to the creation and admission of the Douglass Commonwealth, it clearly would be Constitutional. Given the solid Democratic supermajorities in both houses of Maryland's General Assembly and that it only requires three-fifths of both Houses in Maryland to override a Governor's veto, SCOTUS could at most present a minor procedural speedbump to the admission of DC if the Democrats retake the Senate.

So it might be worth getting Maryland's consent to the creation of the Douglass Commonwealth next year just to forestall a silly suit.