ok, I see the white line that starts about 40% of the way over to the right (starting from the left bottom) from the bottom of the picture and is angled up toward the left corner of the picture. the debris comes from just to the upper right of this line and crosses it moving leftward and down. it starts off as a compact whitish oval and sweeps across and goes splat two times or two frames moving toward the bottom of the upright cylinde to the left of the picture.
but isnt the shuttle over to the right? you can see the windows at the top of the picture and the tail sticking toward the right at the bottom.
I am not sure at all what the structure is that the debris goes splat on.