This will be an interesting one in terms of cancellation. Not so easy to call it 'obviously a mistake fare' when QR was selling legit business class last year from Asia to the USA for $700-$900 (BKK-BOS) and $12xx (BKK-LAX).
FWIW - Someone asked why BA only from JFK, vs MIA. In my case for several days the UIO/GUY to MIA would have been in coach. So we have LHR-MIA in First and JFK-LHR in First.
Also FWIW - We don't fly until January. I will wait a few weeks before booking the positioning flights to see how this shakes out.