What he can do is say that California's problems are enormously complex, that he's seeking advice from the best financial minds, that he intends to make much of the advice public so that voters can see what is involved, and that he will make up his own mind at the proper time.
This strategy restricts his options but makes him look fresh and good. Maybe he can come up with something better. I couldn't.
How can one place themselves into a position to look like a complete idiot when one doesn't do anything?