In the beginning, I believed the foam to have grazed the bottom, but after I ran the sequence about 100 times while tilting my laptop screen, it gave it depth and a perspective of the location.
Anyway, that is what I came up with. The tile is probably a critical one, since it borders both the wing edge and the wheel well.
If this is the cause, then both were compromised, but the well gasket and seat likely failed first causing the cover to fall away. The rest was a matter of stripping the tile underlayment off along with the tile. Eventually the skin and then loss of control due to the tremendous drag.
Going to take a nap.
I find the discourse to be fascinating as the Free Republic engineers continue to work the problem. I appreciate the opportunity to mix it up with those of you in the business and those of you in the know, and those of you that may be in my shoes, just darn interested and willing to chime in.