Hey, I'm all for the "gentle person goes crazy" trope, but I think it would have been better if there was more action, more violence, y'know? From what I can tell he just threw a good rock and punched some guys in the dark. That's not enough to call someone the Yeti. Make him do more. No need to even show it, just imply it. Put some shading, scary eyes, some bone cracking sound effects, and you've got yourself a cool husband right there.