Find the pic, and see what you think. F1 is possible, eithwr as a STALL recovery memory item, or as a desperate attempt to gain control, or lose a/s or Level out, or......
Lyman, on a scan through BEA interim report 3, I found no such picture-but I admit to being occasionally unobservant.
There was a picture of a flap track in an earlier report, but that showed the trailing edge flaps to be retracted.
There was a tabulation of the final readings and configuration including this bit:
Last values recorded on the FDR....
Configuration Clean
When aircraft get crumpled, the forces are very high, and adjacent parts bang together. This generally leaves copious marks of where components were located at the moment of impact. BEA would have known from the recovered wreckage almost immediately if a flap or slat was extended. It would have been published in IR3.