Hey Ghostwatts,
While not to that degree, I have had similar sensations...weird thoughts out of nowhere, a dizzy and spacey feeling. Also like the surroundings are totally off. I think you are not alone in this as I had posted a similar post earlier and got answers saying people experienced the same.
Do these things worsen with over exertion/anxiety? My symptoms definitely seem to worsen with anxiety. It is a real terror but it goes away.