wiggy,
Thanks. I Googled around and found out what that system is (some Airbus concoction) but I don't know how it's applied operationally. I don't know if a crew is legally/SOP bound to adhere to such a warning regardless...even when they know they're not looking at a short runway.
I looked at the metar for that time at JFK and didn't see any precip that would create stopping issues on a 12K ft runway.
So, like you, I wonder if that pile of computer chips merely went off the rails.