I reckon the crash site is on the ridge running to the north from the Forcletta pass to the peak 'Le Boudri'.
The village visible below the crash site is probably Ayer.
Maybe I'm completely mistaken, in any case this site will publish a preliminary report in a few days:
BFU - BEAA - UIIA - AAIB
The general wind was south westerly, this is known in the Alps as 'Foehn' and can be unpleasant, but on the morning of the accident winds were not strong enough to produce significant downdraughts or rotors. They were certainly not a problem where I was flying 100 miles further east.
From the Forcletta the ridge rises to the south east up to the Weisshorn at over 14000ft.