I don't have the answers so skip this post
However for those who are wracking their brains around angels on the head of a pin.
Engines have a tendancy to go forward of the airframe when they come off early and the airframe slows down a lot more due to sliding friction. Even an unpowered engine will roll and bounce quite a distance since it doesn't slide very much once it's loose.
Aircraft slding along the ground in soft earth will rooster tail lots of dirt up over the wobbling sliding wings. The dirt likely could have some serious erosive inpact on composite winglets.
Now if any of these little bits are so very critical to what happened and you really have to know, then wait a day and see which way the investigators are focusing
