Gibbs defensiveness in communication_10/15-10/21

One of the interactions I could think of that I felt disconfirmed and defensive, was the conversation I had with my Boy Scout commandant, when I was in ninth grade. During my high school years I served as the patrol leader of the Boy Scout I joined since fourth grade.  I was always responsible to see that everybody was fully dressed in their proper uniform and had all the required gears, anytime we had a patrol. One day the commandant came around and told us to inform our parents that we were going to have a three day camping outside school. He later called me aside, being the patrol leader of my unit and told me to come down to his office, at 3pm, that same day, to collect the printed letter that would be handed to each student for their folks. I got down to his office 2mins earlier than 3pm, and waited for him. He never showed up, and then I left for home. The next day in school, my commandant called me out in front of the whole team, and scolded me with words I felt was harsh, and disconfirming, saying, I was irresponsible for not coming down to pick up the letters without allowing me to explain myself. According to Gibbs defensiveness-producing communication, I could highlight, control superiority and evaluation