Not really. They can say "we shouldn't have taken this"[0], they can decide the case in a way that doesn't really offer any precedent (eg: these are the wrong plaintiffs to have brought the case), or they can remand it back to a lower court for more info. Prediction markets seem to think there's a 70% chance they'll strike down the tariffs though.

0: https://en.wikipedia.org/wiki/Dismissed_as_improvidently_gra...