Was the straight in landing not possible because you would be unstable due to glide angle? Could you confirm what has been said about the speedbrake / F20 and whether this was a normal 757 technique?
..Sorry I do not recall the speedbrake / flap limitations anymore..Maybe a current 757-driver could help us ??..The straight in landing was not possible due to the steep descend angle requirements, therefore a circling approach from overhead the runway was made, to lose the altitude..Similar procedure used at some other airports surrounded by mountains..