As a leader you can ask the people under you to make adjustments, and if they don't you have to weigh how you are going to handle it. I think SF knew his time was done as a bills OC. We do not know this, but I believe DJ was covering for a assistant that was not trusting his players. I think DJ is the type of guy to let his coaches, coach and then he deals with the consequences. He probably gives lots of imput, but it is up to them to gameplan and call plays.