wilyflier
has collapsed onto the 'stub' due to
high vertical G force at pancake type impact
I can't see any traces of dirt or sand on fin leading edge as well as on top of rear fuselage where it's torn off the main. The same with cockpit bottom seems intact and clear from any traces of ground.
On the other hand, any part which is strongly damaged bears prominent traces of dust and sand/ground, literally excavates it.
Doesn't it mean that parts which are clear doesn't contact ground or make it with small speed?