NASA noted the possiblility of wing damage in light of the insulation that blew off the craft during launch. Techical analysis of the film was inconclusive they report....they also noted there is no way to confirm that damage if any while in orbit and more importantly...."there is no way to repair any such damage to the tiles....sufficient redundancy has been built into the structure to prevent loss of the the thermal integrity...."....thus they felt no need to pursue the matter further. This issue will no doubt be reviewed. They noted they accepted the risk of such events and reported the operating environment was designed to prevent damage to the tiled area of the aircraft.
It is regrettable ...but sometimes when you walk on the thin edge...sometimes things happen. Heroes all....God Bless'em...they died living their dream ! The rest of us should be so fortunate.