Pyrotechnic Escape Hatch?
This does have some implications on future escape installations on Flight Test Vehicles. This is the third FTV lost during some sort of landing or takeoff mishap (the other being an LJ-45 at Wallops where the 3 crew walked away after a lot of difficulty in getting out - happily with no post-crash fire).
Normally this is aimed at providing an escape path during an inflight stall but it appears that exiting after fuselage deformation may now be a higher risk. The only installation that has some aspects of this is the explosive exit hatch on another Learjet.