From the picture it looks like full flap was used and little stick input used in the gust....yikes............it appears they Flared way too early........they are lucky they didnt crash cause if that wing had dug into the grass it could have been curtains.
IMO You got to drive it in esp with flap 3. Flaring that early can expose you to vicious gusts and thats what it looks like they got unfortunetly .
Yes we all hark back to the boeing esp the 737....the 200/600 was a little fighter but the cross wind limits was less than the 320.
From memory landing on 23 can produce vicious shear. Likewise be warned rwy 23R at Dusseldorf can produce vicious shear in the last 500 ft with the winds from the north. Safe flying and throw it away if you dont like what you see and yes pick your legs carefully.
