Reality check:
Everyone's going to simply expect the players to inexplicably make this flawed defensive scheme (that switches to cause mismatches and leave 3 pt shooters open) work, and if they can't, it will be all the players fault. (?!)
Vlade requires Karl to change the ineffective defense. Well, how can he do that at this point? He has no training camp, and few practices to do anything different.
What does the world really expect Karl to coach differently? What exactly is supposed to change?
And if Karl DOESN'T immediately implement a different defensive scheme, isn't he actively defying Vlade's demand?
I guarantee you, everyone will drop the ball on this situation, and start blaming the players en masse for "not putting in enough defensive effort" (into this anachronistic, inappropriate defensive scheme).