Door Problem Fixed.
After removing small shroud around inside door handle and probing with a jewelers screw driver, the lock released long enough to get the door open. After removing inner door panel and part of the sound insulation, I checked for every moving part, spraying as I went with white synthetic grease through the straw. Eventually, it would release manually using a lot of pressure and pop back again after a few seconds (like the cable was binding). Spent about 90 minutes, loosening, removing, re-attaching everything. Finally, the lock and door closure mechanism started acting normally. Leaving inner door panel off, I drove into town looking for a valve cover gasket, which I found at O'Reilly, not a Pep, not a Autozone, not at NAPA.
In conclusion, thanks for all your help. I can only guess that the lube needed to work its way into the cable, which is mostly enclosed.. .and I now have a well-lubricated door.
Dean

Dean