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SOLVED
Went and did some more work on the car today. Previously when I thought that the relays worked after the car started is due to physically actuating the relay. That subtle physical jolt would allow the relay to close on its own and remain closed.
Today, I jumped the connections, bypassing the relay actuation and saw that even when the car was running, the relay did not close. A slight tap to the coil and the relay will close and the car would continue runing.
Conclusion is that the DME relays, more specifically, the one for fuel pump is no longer working reliably. This confirms above poster's suspicion.
At the moment, I've jury rigged the fuel power circuit to a fog light switch. Seems to be fine so far. In fact, seems to start up even better than ever. Course of action now is to get a new DME. Damn this car is taking all my money.
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