I'll agree with this, but to be honest, the problem isn't Garrett or Phillips. It's Jones. When the players have an open door policy that fosters an environment where it's acceptable for your players to go over your coaches head, and subsequently, right into the owners/GM office to "air it out" you've basically castrated any balls that your coaches have. NO coach can maintain order in that environment.
It's like two parents with a group of children. Dad tries to be the disciplinarian but Mom circumvents Dad everytime he doles out punishment. Two weeks of grounding turns into a weeks worth of dishes. Which results in a Dad who has no control because he's constantly undermined and Mom has no control because the children know that they can run roughshod over her. In the end what you have a group of uncontrollable ****ing brats. That's your Dallas Cowboys, kids.