Stormy here at Schiphol indeed, and has been all day. Even the local ordinary weather services have been warning since tuesday that there would be a code Orange today. Farmers around the airport have spent the last two days tieing things down (to give you some local perspective).
Looks like (video shot from behind) the right wing dipped just after lining up and just before landing which caused it to touchdown on its right leg only, at first nicely on the runway. Then quickly the right hand gear collapsed as seen on the short video (shot from inside).