Paul O, who's story 'Doctor, Alcoholic, Addict,' contains the often quoted section on acceptance, wrote a book called “You Can't Make Me Angry,” supposedly to show that once we are living in the solution we don't get angry.
It's a good theory, but I kind of doubt it's really possible. I read about the best of men Jesus, kicking down moneychangers tables in the synagog, I believe you have to be angry when you kick down tables, (unless your name is Bruce Lee). So I don't see much wrong with a spurt of anger when 'justified,' (which I know is a dangerous word), but for me the test of my fitness in the program comes in how quickly I recover.
What used to be a grudge I might hold for hours or even days after the incident, I now find is relatively easy to brush off in a couple of minutes. The old 'when agitated we pause,' if we fail to pause before we react angrily, we can still do so after, a quick thought about what our higher power might have us do, sets us back on the broad highway.