I don't see Mayo as intentionally out to deceive others as much as deceiving himself into believing he's more than he is, Others enabled that, giving us the proverbial emperor with no clothes.
Like many star athletes Jerod Mayo never has lived in the real world, forced to learn firsthand that emotional willpower is no golden ticket. He is charismatic, inspirational and has leadership qualities. He is smart, to a degree, but has not demonstrated the wide-ranging/multifaceted football acumen required of an NFL head coach. How could he, with such limited coaching experience?
Right now, Mayo should be learning under an experienced HC how to be a good defensive coordinator. No way in hell should he be within miles of actually running a program, ESPECIALLY one that needs rebuilding from the ground-up.