Promote Jonoko maybe? I'd like to think he'd try to retain him. No one suffered more injuries than the Kubiak's Clan and so it's a legit reason for his struggles. Perhaps one more year in the system will cause the penalities to decrease??
I would want to kinda keep Kubiak for at least one more season. Its more for Spencer Rattler than anything, I wouldn't want him having 2 offensive coordinators in 2 years. He would be learning a new system which would make him a Rookie QB again.
My only knock on Kubiak is that his creativity comes in spurts, he runs a play I've never seen before then when 3rd and long comes, he calls the most boring predictable play ever.