Neither research nor experimentation led me to a combination of button presses that resolved the issue, nor did I discover what the manual meant by the word "reprogram".  I did resolve the issue, however.

Other online sources suggested *resetting* the oven by unplugging it for a time.  I had tried this already, but I had left the power disconnected for only about 30 seconds.  That was not effective for me, but some sources suggested leaving the oven unpowered for ten minutes or more to effect a reset.

I actually left the oven unpowered for several hours, which I'm sure was overkill.  Additionally, though I'm uncertain whether it was necessary, we held down the door sensor switch while we restored power, on the theory that we would prevent the oven from recognizing the door open / latch closed fault condition.  When power was restored, the door latch started rotating. We held the sensor switch until the latch stopped (in the unlatched position).  That seems to have fully resolved the issue.