Well, I gained a little more experience with the problem today as it happened while out shopping. This time I was lucky enough to duplicate the problem a couple times after returning home, and did a little troubleshooting with the voltmeter. I replaced the inertial switch and still had the problem, so I checked for voltage at the connector to the inertia switch. I don't have a schematic for the car, but I think the power for the fuel pump runs directly from the inertia switch (someone please correct me if they know differently). Anyway, with the fuel pump audibly working and no apparent problem with the car, I turned on the ignition and checked for voltage at the inertia switch connecton and as expected, I had power. I was then able to get the car to stall after restarting a few times, and duplicated the problem of the fuel pump apparently not running. I then checked the voltage again at the inertia switch and again, there WAS voltage present. To verify that the problem still existed at that moment, I plugged the connector back to the switch and tried to start the car and was unable (there was also no sound from the fuel pump). I then checked the voltage again at the inertia switch and verified that voltage was still present. After a while, the car started again and I could hear the fuel pump come on after stopping the engine and turning on the ignition. So...... unless someone has a better suggestion, I'm now fairly convinced that it probably IS the fuel pump, despite my previous denial to accept it. If there is power being supplied to the pump at the inertia switch, then most likely the pump has some kind of problem during initial startup, correct? Anyway, I don't feel quite as reluctant to replace the pump now, since it seems more likely to be the culprit. I just didn't want to spend the money to replace it without some degree of confidence that it was the true cause.
Any comments based on this new information would be appreciated.
One more question...... At this point I'd say it is the fuel pump or an electrical connection to the pump at the tank as SHOZ123 suggests. Any bad electrical connections in this area would require removing the tank, I'm sure, so does anyone have any suggestions on what to look for so it can be prevented from recurring upon re-assembly?