He has upper management written all over him.
It is a sign of program health to have perfectly serviceable guys need to transfer out in order to receive playing time. It is a good sign to have guys leave and still land at P4 schools instead of the Sam Houston State's of the world. Texas is no longer locked into bad evals, or developmental gambles that yielded guys who are just good, decent, players. Texas is quickly becoming a place where if you can rise to the level of starter, you will likely get drafted. If you aren't that kind of player, you probably will need to move on and enjoy your years as a college player elsewhere.
All of those guys had different obstacles/left for different reasons. But the bottom line is that they simply were not good enough. I was initially worried that Sark was too nice of a guy, but he has managed to build a culture where the guys like each other and there is camaraderie, accountability, and competitiveness - but there is also the knowledge and understanding that change is constant (unless you are Max Merril.) The money helps, to be sure, but they've been smart with it so that it is a tool rather than an obstacle.