So, I have been having another Emissions light for the past several days, and decided to try the 12v battery disconnect that others have suggested. That did work, but for some reason, the HV range came down from 900+ miles to 255 miles, which was reasonable, given the amount of HV driving I've done. Filled the tank again, just to see what would happen (about 3 gallons) and it went up to 325 for HV range. Since the HV driving I've done averaged about 58 mpg, that's not unreasonable. It'll be interesting to see the software fix when it's finally available, but at least I have no Emissions light now, and the HV range is in the ballpark.