Unfortunately, my title was misleading
Larry,
I should not have used 'shuttle' in the title. I wanted explore what a reusable craft would look like, then you talked about the danger of aerobraking, which are real but managable. If we could hit a 1.5 degree window with Apollo we can do the same with a vehicle designed to return to earth orbit, and all I was saying was that the window might be, say, 2.5 degrees, because some limited set of higher orbits would not doom the crew.
So I think we have no real dispute on this point.