Well, those electrons stopped moving today. I guess the surging that I had earlier was a sign that something wasn't right with it. It completely shut down today on fully charged batteries. I suspect the controller crashed. I was at the bottom of my 300' hill--I pedaled up every inch with minimal sweat (cool day @65 deg F).
I took apart the sleeve holding the wire junction near the controller. This revealed two more connectors that joined wires from the cycle analyst and the throttle in addition to the two connectors to the battery and the motor. A fifth connector had no wire connected--I suspect that would be for a crank sensor.
I've emailed Bike Friday. I'll likely phone tomorrow. Updates later. e-assist is too much fun to give up now!