He like Walker are fading forces, bodies are failing rapidly and like most top pros they have difficulty handling the truth and the reality of the situation.I think KDB is getting frustrated at what is happening as the players are only human after all. He maybe heard someone shout something not very nice at Walker and like anyone might has lost his temper a bit.
Let’s face it the players are not automatons, they don’t go out on the pitch thinking I’m going to play badly today. They are just as frustrated and upset as we are.
JMHO
Never nice to see once great players decline but sadly it's part of the game.