My thing is the only way Miller is vindicated is if there is no such tape.
Play it out, suppose Ayton did NOT get the money. So Ayton's eligible, that still doesn't even remotely vindicate Miller.
If there is a tape, again if, then the entire defense that Book was a rogue coach is gone, they would still have Miller on tape talking about trying to get a player paid so they can sign him. You have him on tape telling the agent he knew nothing about, to work directly with Miller not Book, which would prove he knew what Book was doing with the agent. You have teh Yahoo story that says Book offered Alkins to the agent to try and get Bowen, and Pasternack offered Lauri to the agent to try and close on Bowen too.
So even if DeAndre Ayton is completely innocent here(or his parents), you would still have a program where the head coach and top 2 assistants were dealing directly with an agent, trying to buy players, and had steered at least 2 current players to an agent to try and curry the favor of the agent. That's the definition of a lack of Institutional Control. Completely remove Ayton and you still have a IF that taped call is real, Arizona's program is going to get hammered.
I also don't get the idea TJ put out that ESPN would be sued and have to produce the tape, ESPN never said they have the tape, they said the FBI has the tape. Given the FBI case hasn't closed yet I think it's HIGHLY unlikely ESPN has the tape or even a copy of it, it's part of an active FBI case.
Miller could certainly sue over it, you can sue over anything, but unless that tape doesn't exist, or Miller doesn't actually in any way make it clear he knows who Dawkins is, what Book is doing with Dawkins etc, even if Ayton is clear and free, Miller and ARizona are in big trouble if that tape exists