I totally get what the OP is saying, but as frustrating as it is, we have to trust Cal.
Skal is just not very good, and frankly, I see no signs that he will be anytime soon. The easy argument - and one that I actually see a lot of merit in -- is that the program will befit more in the short and long-term by getting Humphries minutes now. We know he's going to be here next year no matter what.
But knowing how Cal thinks, he doesn't see it that way. In his mind, if he can get Skal turned around - and Cal always believes in himself and his staff - it not only will help the kid, but also help recruiting down the road. If he pulls the plug on Skal, it will be used in negative recruiting down the road. Cal is always two steps ahead of most everyone, so even though I cringe every time Skal is in, we have to believe in Cal on this one.