I had the same thought, but those cockpit modules are really designed to maximize the odds of safe ejection, and I wouldn’t be surprised if they consider the possibility of failure and escape as part of the stunt design. Still, it’s amazing everything worked out, especially at that low of an altitude.

Do we know if the pilots are OK? Yes, ejection can save your life, but even in a best-case scenario the forces on the human body are incredibly ugly. I know a former combat-rated RAF pilot that had to eject from a Harrier because of a low-altitude bird strike. After 6 months in the infirmary, he emerged 2cm shorter, combat rating gone forever.