This^^^^The problem is Greg has been hands off and given the reigns to the coordinators. His job changed. He’s CEO and doing CEO duties like nil and recruiting . He needs to get back involved big time especially on D.
The players for whatever reason are not able to play the defense the coaches want them to play this year. To this point they have been trying to hammer that square peg which fit last year, now this year, into a round hole. It's obvious it's not working and they need to make some changes that better fit what they have. You're supposed to be a defensive specialist, you should be able to figure out what gives you a better chance to succeed than what you've been doing.