It's easier to sacrifice something that you get for free.
I'd imagine he had a replacement by the time he got to the next tee.
When I was a kid, I watched Crenshaw hit a very similar shot in the Citrus Open at Rio Pinar CC in Orlando (in the late 70s it relocated to Bay Hill & the name changed). He wrapped a 5 iron around a pine tree, bent it like that, then stepped on the shaft & broke it the rest of the way.