I see messed up fish all the time working at a salmon hatchery. I have seen fry that are bent 90 degrees before and they do survive for a while. I wouldn't be surprised if this guy came out of the hatchery like that, as it happens all the time.
Here are a couple of freaks I have pictures of. Seen a lot of cyclops but this was the first triclops.
This smolt was about half as long as the rest of the others in the round pond, a tiny little football. I have seen this also with browns at the NY hatcheries.