Although i do not recal the number, (somewhere in the 800's-900's) i posted a possible alternate senerio...namely that one of the left side landing wheels blew a tire. i have no idea what your technical abilities are, but a tire inflated to the specified pressure of the shuttle is a potential bomb if it goes off in near-vacuum conditions at the temperatures the shuttle was generating at the time. It would be sufficient to do structural damage to the left wing.
Again, while i cannot dismiss your senerio, i believe that it is too premature to speculate until alternate senerios are determined to be unworkable.