I think it is a deffinite possibility.

I suspect that people whose minds resisit lucidity do so because of fear or because it is so unfamiliar. What do you think?

BTW, I've never had a RC fail for me. But I have had a few times where something in the dream distracted me from becoming lucid. I wonder if maybe at times the mind is trying to prevent lucidity so it can do something in the dream it probably wouldn't get to if you became lucid. I'm a natural and LD almost every dream, so for me this is a real possibility.