I don't know much about psychic experience or grounding, but I do know that as consciousness nears enlightenment and the ego gets weakened, the sense of local/personal identity decreases and becomes more and more nonlocal. I've had some nausea/spacey/nonlocal experiences, and I think it's just glimpses of what it's like when the personal ego reality starts to disappear. From what I've heard from other people further along the path, it's disorienting at first, switching from everything being oriented to the frame of reference of somewhere in the middle of your head, to nonlocality, but you get used to it
