<edited by the chief>
He's just blowing off steam, everyone has their way of doing it. Some people insult the players, some people insult the coach, and some people punch holes in the wall. He's just dealing with a 50 pitch first inning that should horrify every baseball fan on earth, and how timely hitting seems to evade this team.
He's just really really worked up. We should be glad to have such fanatical fans of this team, every other team does.