I think the photo you posted is the first one to show the scale of how far that cockpit dropped....
Well I think you'd droop a bit if you slammed into a concrete barrier nose first, crawled up the wall and burst through a wall!
More a Police thing than an Air Accident Investigation maybe? 3 serious injuries, and more a 'road accident' than a plane crash- it wasn't really a plane, more a self powered moving surface transport device.
Quite a lot can be salvaged. Wouldn't expect much from the electronics bay, but engines and engine parts, APU, aircon packs, wing, tail, flight control units, flight control surfaces, doors, seats, windows, galleys, flight recorder. Quite lucky no serious fuel leak.