@RetiredF4
It was stated in earlier posts that Airbus test pilots have drag chutes to deploy when testing, can't find the reference but
AF 447 – What The Crew Did … Maybe Dark Matter
states
10. A hazard of large aircraft design is that they can become inertially locked in a developed spin and are unrecoverable without a drag chute, if at all.
@GreatBear re where?
In your scenario surely South or South East of last position is possible? The flightpath to Tasil was well searched by SAR. Recent searches went right up to the 40NM limit North/ North West, ignoring debris field drift evidence. Why?