Noone's accusing you of neglecting your players, why are you so defensive all of a sudden? It's just standard procedure that we have to go through. Believe it or not, there are managers out there who have played for seasons and are still clueless.
So, what formations did you change to? Did you at any time use an illegal formation during the match? How were the arrows? I believe you won all those trophies by playing moderate tactics, but this easy Cup game might have caused you to play too opportunistically.