Unfortunately for EJ, you don't too many chances. He may never get another opportunity with Buffalo, or Orton may get hurt next preseason... you don't know. There may have been many possible Kurt Warners that never got a chance, but that's life in the NFL. You earn your chance in practice and maybe because of injury. Coaches can't risk losing a game and maybe their job just to see if someone will play well, if they don't , they might have screwed themselves over.