Nah, it was more like a large monochromic white visage that appeared over everything, and moved along with my head. Not smoky or hazy, something very clear. It was there for just a moment and disappeared. Pretty freaky.
I don't know if "false awakenings" are the same thing though. But I wouldn't know, my own episode happened right before I slept, not when I woke up.
But from the stories I read, those that happen after waking up often let you get up and walk around along with the dream. Like there was a story of a woman who woke up to see large cockroaches everywhere around her. She got up screaming, and they were still all there. She gets out of the bed and runs to the bathroom to get water on her face, trying not to touch any of the creepy things, and when shes back from the bathroom they're gone.
A false awakening sounds more like a tricky nightmare that starts in your bed, in which you just assume you're not sleeping anymore. Like, in the nightmare, you get up, walk around, be scared, but when you wake up you're back in your bed. So at least thats some sort of reality check or something. Like, you know that none of it happened.
I think I found a website about these things, but i'm not sure I like the site, it looks creepy, the terms they use are a little... "out theeere"
http://www.trionica.com/Also apparently I made a mistake in my early post: sleep paralysis in itself is quite frequent, but sleep paralysis with visual hallucinations is pretty rare.
I know none of these things "disprove" ghosts at all (Its not like the non-existence of anything can be proved anyway), but at the very least it shows you don't need to have schizophrenia for your mind to have a pretty strong hold on what you experience.