This morning I tried to replicate the low charge rate problem by inducing a pause with the remote.
Long story short: After both a short 20 second and a longer 6 minute "remote induced" pause, the charge rate returned well to the 3kW rate. And interestingly, since the car (as usual) paused itself and came out at a low rate, I found that in that "funk state" I could not induce a pause with the remote. I could only get the dash light charging indicator to flash off for a half second, then it would go back on. So then at home I tried the "remote pause" while plugged into my 240V line, and it would pause. But plugged into my 120V charging line it would not pause, other than the 1/2 flash off of the dash indicator. So it almost seems like the car thinks it is only being charged at 120V when it is in its post pause "funk state".
The trace below is notated with what I was doing at each change in the charging rate.
I had been hoping that stations that show they can do 32A per cord would not be the kind of station that gives me the low rate after pausing, but the station in the picture below does routinely return to a low rate after a pause. Interestingly, that rate seems to be 1.35kW, not the 1.1kW I see on a station that claims 24A per cord.
After the car induced pause, the station readout indicated that it seemed to be ready to charge up to 6.6kW, when my trace/app was only showing 1.35kW.
During the 6 minute long "remote induced" pause, the station appeared to be ready to offer a lower value of 4.0 kW. (Note the "hollow" lightning bolt, indicating that charge is not taking place.)
So I am back to thinking that after a car induced pause my MiEV is somehow not getting both poles of the charger. But my understanding of 240V is that since they are out of phase, the other pole is the "return line", and the ground line is there for just in case there is a short.