The nature of the beast Billy Barty (Mr. Deeds).
5 losses creates an uproar in the likes of Norman, Tuscaloosa, Los Angeles, Gainsville, with a few etc. Heads have to roll and you can bet your last Moon Pie any program with a Stoops type winner isn't going to yank the rug on that track record. Up and coming OC and DCs are to be had. Heupel also had the misfortune that the DC shares the last name as the HC and is therefore awarded a longer rope.
There are numerous factors that played into Josh and Jay getting their walking papers. It wasn't completely performance based decision when there's as much success produced by both coaches.
Neither were without flaw, but the pros outweighed the cons every season. And it took a string of shit luck to send them on their way.
Don't be surprised to see Josh attain the success all of us were sure he'd have here in Norman at another locale.