HOW DID HE PULL THIS OFF

Scramble notation
F2 L’ U D2 F’ R2 D B2 U’ B9 D2 B2 U2 L’ B2 R U2 R’ U2 R’
Congrats to Tyson for winning and congratulations to Yiheng for pulling of such an amazing solve ,but I do wonder what would happen it that scramble was a official scramble in an official competition and using a stack at timer. I hope what I imagine won’t happen , or not we’re doomed.