Hmm, not sure why it did that, I'll look into this. You should be able to open the menu and hit Suspend to save and back out to the title.
The solution here is to copy the arrow-shooting gargoyle from the previous room and then spawn it so it shoots the crystal.
EDIT: ah, ok, if you spam the fairy button over and over fast enough you can get locked. Sorry about that, I'll work on a fix.
EDIT2: Fixed!