A couple of things that seem odd about this photo
1. If the aircraft was landing, wouldn`t the arrestor hook be lowered?
2. It appears that the pilot is the only person on board the aircraft.
3. I would have thought that not enough flap is selected for landing, however I do not know what degree of flap would normally be selected for landing.
Furthermore, there is no mention of the loss of this aircraft (I think it is onboard HMS Eagle), in any list of Gannet losses that I can find.
Waiting to be proved wrong on all points….