I should have been more clear. That's what I meant when I said the physics don't support it. IF he gets the rest of it correct and approaches the SOS...he won't survive and he'll start burning up before he hits that mark....thus seriously messing with his aerodynamics and keeping him short of the mark.
Do us a favor and don’t pretend to understand the physics of it. It is pretty clear the guy doing the jump knows more about it. When Kettering did this he got withing 20 or 30 mph and did not burn up. There is not much air up there to heat you up. To say nothing of the amount of COOLING you get from -90 degree air blasting past you. Plus the heating at mach 1 for a short period of time is not that much. Compared to the thermal undies he needs to survive the cold assent that heating is nothing at all.