He's waiting until the season is totally blown before making a change.  His twisted logic about not making a QB change at halftime "because we were still in the game" is further evidence of that mindset.  That should be the reason TO make the change then, not FAIL to make the change then.  

Once we're 3-6 and hopelessly out of the playoffs, THAT'S probably when he'll make the change.  Ugh.