It is something none of us should want to happen. However, many things like poor academics, injury, lack of discipline, and sometimes poor attitude leads to attrition. We can speculate all we want, and bemoan a feeling of unfairness in the process, but very few of us are there to learn the true reasons why a player leaves early. Oh sure, they always release statements, but that says very little. We may never know the exact reasons and circumstances, but I don't need to know. It's football, not an episode of a soap opera.
That is why I neither praise nor condemn the coaches when this kind of thing happens. I just hope that they do what is best for the program and the players. And no matter why they leave, I wish them well, and appreciate that they chose to represent the Vols.