That seat definitely had to be replaced.
The few times I've been in bush flights over terrain, it's always felt like the man upstairs is punching my dance card. When I'm feeling brave I'll sometimes ask pilots about it, and sometimes they're like, yep, feels that way flying too - that's why I love it!
He was flying to a different airport from the one he took off from. It's possible he was way past the point of no return and had to make it over the pass or emergency land in the mountains.