not if you put them back into 24hr light as soon as you can tell what the prefloweres are. and keep them under 24hr light untill your sure they're growing and back in veg. then you need to keep them in veg for a few weeks so that they will get over the stess.
you might get away with it if you leave them vegging long enuf to get over the stress.i tried it a few months ago,and didnt leave them long enuf.end result was 4 out of my 8 turned hermie.be careful