There is a third kind of pole shift theory that was developed by Charles H. Hapgood, a friend of Einstein the Albert, in which the crust slips over the mantle. The geophysical (North and South) pole is actually the location where the imaginary axis of rotation passes through the crust. So if the crust slips slightly, the locations of the North and South Poles change.Einstein (not the ones on the internet forums, the other one--you know the guy with the bushy hair? That Einstein)thought the idea merited further study (in other words, he liked it).
It is this kind of shift I believe which Cayce would have to have been talking about. There would have to be some source of torque, although a slight change in rotational speed might be sufficient as the moments of inertia of hollow and solid spheres differs.This kind of shift might be very smooth--of course there is a vast quantity of ocean water with inertia that might cause tsunamis if it were rapid enough. Also, if the crust slips there is going to be a change in the location of the geomagnetic poles.
As far as Ed Dames is concerned, his old Remote Viewing boss at S.R.I.,Russell Targ, said he had never known him to be right, although he was a very entertaining guy. He did get closer to the actual location of the Fossett plane than the official searchers did--he was in the right state in about the same general area.
:D