The comment [as you probably heard, too] was to the effect of, "I think they're through the danger zone now. Ground control has to breathing a huge sigh of relief." I think it's the combination of the uncertainty [no matter how small] of both the repaired area, and the area that was left as is, in addition to the normal dangers of re-entry. The problem is that there's a point of no return. Limited fuel makes for limited landing opportunities, and the conditions of the vehicle itself are whatever they are, for whatever reason....and how they interact with the atmospheric conditions present will determine the success or failure. When it comes to space program ventures, I really don't take anything for granted. These are also very old vehicles.
Great point on the 'mess halls'

~ Lizzy