I'm not so sure that is the case.
If we accept that the spritual plane exists, and that the soul exists as well, then is it not possible that, as the body fails, the soul begins to experience things on the spiritual plane? Senses it always had, but didn't use before because it was still contained by the body. Then the body revives, and the soul is fully re-integrated, but retains some slight memories of the spritual plane?
I don't think, you see, that the spiritual and physical planes are separate. They overlap and intersect. The human soul is one example. It is a spiritual thing housed in a physical body, using that body as a medium to interact on this level of reality. Therefore, you do not "go to" the spiritual plane when you die; you're already there, so to speak. But while still housed in your body, you are blocked from experiencing the spiritual plane, except in rare cases, and can only perceive the physical.
And I realize that the scientific types here will cry a load of BS on everything I just wrote, but I'm in a philosophizing mood.