Out where? Just out of the grow light and into a room with a normal bulb? If that's what your asking, then no way would it hurt them. I move my plants every day to water, to rotate, to tie up hangers... etc. All of this I do in another "work" room. I would not leave plants out from under the grow light for too long just because your loosing production hours, but a very small amount of light will keep your plants in they're light cycle.
Someone please help us both is I am wrong here!
Overgrow The Government! OTG!