No. He was signed by St.Louis specifically to be a starting LB (replacing Chamberlain actually who we friggen signed :covri:) on the evaluation of Greg Williams.
So Vitt developed Dunbar into the guy that Williams wanted to sign to start at LB. Spag let Dunbar walk so he could bring in his guy Chamberlain.
So Vitt gets credit for Dunbar. Dunbar got his job because of the progress he made under Vitt that Williams saw.