I thought I remember reading Tubby wanted to meet with Royce's family first?
There isn't anything to dropping a player from the program. At Royce's age he's considered an adult. His mother, grandfather, or fairy god mother for that fact, have no say in anything. Actually, Tubby doesn't even have to speak with them. At all. It's a simple form indicating his withdrawl from the program and a directive indicating whether they will still cover his tuition. Because if they can get to sign that he quits, legally, they can recover the money from his tuition this fall.
Provided Tubby does want to meet with the family it shows that he's a pretty straight guy. He could hide behind the FERPA laws and not say a word if he wanted. It sucks, but that's the way it is.
I bet Royce is more than suspended and he's an inch away from some of what I wrote. More than likely there are serious conditions to his returning to the team. If they aren't met, he's gone. The U can really bone him if they want by not allowing him to transfer, take a redshirt, demanding scholarship money back, etc.