He's shit the bed now. Part of being elected, or, more importantly for DJT, re-elected, as a strongman is actually being able to pull it off. He hasn't. Someone stood up to him, and all he managed to do was piss everyone off for a while and then back down.
I wouldn't count on the American legal system letting any state of emergency shenanigans pass them by. The sort of ultraconservative, Federalist society approved judges Trump's administration have went out of their way to appoint (to places kept vacant by blocking any appointments Obama tried to make) will scream blue murder at the very idea of such Governmental intervention.