I agree. I think people are reluctant to let him go because of what happened with Sean M, Kyle S and Matt L, even though KOC hasn't demonstrated enough yet in my opinion to show that he is in the same league as those three. KOC may indeed turn out to be very good but so far, his work showing Haskins has improved has only spanned a few games...not enough in my opinion to be conclusive yet.
Also, I haven't been that impressed yet with KOC's game calls. For example, I don't think that the play calling on the offense was that great in this last Cowboys game. I'd like to see KOC stick around but I wouldn't be surprised if Ron either replaces him completely or at least brings in a more experienced OC for him to play under.