Russ wasn't done dirty at all.
Denver traded multiple picks for him and gave him one of the richest contracts in NFL history
His first season after demanding his own office and coining that cringy Broncos Country, Let's Ride nonsense, he puts an up a horrible and embarrassing season. Head coach gets fired and Denver cleans house.
His second season was an improvement but the new head coach came to the conclusion that Russ wasn't a fit in his system. Rather than continue to hammer a square peg in a round hole, Denver decides to move and bench him so they don't have to pay his injury guarantee. Denver is hit with a massive cap hit.
Russ walks away with 40 million dollars and gets to pick his next team.