Board Thread:Spoilers!/@comment-25375217-20170119000258/@comment-5679696-20170412221958

Time didn't necessarily resume, but if it did, it would be cool if they had one day to do whatever they need to do, and when the clock strikes 8:15 time gets frozen again, in which case I'd assume he'd just fall back into a coma.

Otherwise, the curse temporarily breaking could wake him up. I assume that if Emma had just kissed Henry with true love before Mary Margaret woke him up, he would've immediately woken up.