I, like Claret, must be having a senior moment (I assume too much there I guess - sorry Claret). I cannot, for the life of me, figure out why the Glide Slope needs a recal for an overweight landing. Maybe I am just too old for this job and should go and fish or something.
Look this was a major problem that mercifully resulted in nothing more serious than a few ruined underpants (in the cockpit) and a badly damaged airplane. The investigation team has the crew and the aircraft and the recorders. All will become clear very soon. Why not wait and see ?
DG