Had a main pack failure ~25k in September 2014, vin P13102, 18 months old, not an A pack (can't remember exactly which one it was though). A friend was driving so I don't know the exact details, but shutdown occured a minute or two after warnings appeared. Never had any degredation or issues with the battery before the failure (always got 265-266 on range charge). Was replaced with a D pack. I wonder if they keep the same serial numbers on a refurbished pack as when it was in the original car.
You had a B before based on your VIN and you got "up rev'd" to a D. Nice... except for the failure part.