Today I rode another 50 miles.
I found a deserted stretch of road, and tried to reproduce yesterday's stall.
After doing a half dozen hard, full stops from a cruising speed of 45 mph, and then accelerating back to 45.....
....
I was unable to reproduce the stall that yesterday left me in the middle of the intersection.
Hopefully, it was a one time occurrence...one time is enough.
The rest of the ride was uneventful.
jb