Dude went from a high school head coach to the offensive coordinator at Arkansas. Lasted 1 year, but then got the Tulsa OC job, then the Auburn OC job. So it has happened successfully.
The Riley Nelson stuff is bogus though. Totally bogus. Doman was a Heaps guy, not a Nelson guy, and anyone stating otherwise is way off base. 2nd, Riley Nelson is not near hte player Doman was. Doman was on the 49ers D squad, and Riley will never sniff one of those.