Well after spending some more time studying the removal of the seat, I thought I had it nearly figured out when the seat belt rail defeated me... I could access the rear mount but not the forward one on the driveshaft/trans tunnel, and this alone seemed an impediment. I was willing to dig out the sawsall and sacrifice the seat belt rail as that could be readily found in a junk yard cheap.
Before cutting anything, and as a means of venting my frustration, I went for the hammer instead....the seat was not gonna win without a fight...a few raps on the fore/aft seat motor, just to show it who's boss and wouldn't you know it....it worked
Restored function whoopee!
Must need some a good going through cleaning and relubed. Now that the seat moves I should be able to remove it the normal procedure and can then address cleaning and lubricating the motor pack.
A few things learned worth noting:
If your seat motor isn't working, and all other wiring and switch issues have been ruled out, give it a rap with a hammer or suitable wrench and see if that works, it just might.
Secondly, should the motor indeed be dead, the seat can be separated from the motor/rail chassis via the lift arm mounting bolts(4) 2 front, 2 rear. 3 of the four bolts engage a boss in the track rail, the forward innermost bolt does have a nut on the back of it, if the seat is forward, you can get a wrench on the nut, if the seat is seat rearwards, you're likely SOL.
The only hangup to separating the seat this was, the seat belt receiver and rail. It may be possible to undo the seat belt receiver via it's mounting bolt to the retaining metal strap and finagle it out (possible on my 87) thus taking the seat belt receiver out with the seat but leaving the seat belt rail mounted to the tunnel; or it may be captured by another metal strap that loops it under the track making it impossible to separate (my 94) necessitating cutting the seat belt receiver rail along the tunnel. Luckily the hammer worked
Thanks to all for your suggestions and help