Thanks y’all ! Unfortunately it began raining again and was getting dark on me, so I didn’t get to check out all of the suggestions that you’ve provided.

I did use a screwdriver in the hole to release the shifter and was able to drive around my yard a couple laps before parking again.

I did notice this evening that the brake lights are not coming on with foot on the pedal. So next question:
is the brake light switch & shift interlock all in one unit just above the brake pedal? Could this be the shifter problem? Anybody have part # for this ?
I still intend to chase the fuses and the relays, rcm as suggested.