[FReepaholic]

It almost looks as if it goes THROUGH the wing!

Like it hits the top and exits the bottom (underneath) as the spray we see.

But, I don't see how that could be considering the angle the orbiter sits on the ET. It would make more sense if it went in from the bottom and out the top part of the wing

[FReepaholic]

I've now seen a clearer version of this video clip. You can clearly see the debris pass under the left wing and see the spray of fine particles exit from under the wing.

Obviously impacting tiles underneath the wing.