Fiddler, my guess is that he expected your typed transcript to be perfect and that he could use it just as it was. When he realised he would have to reword it and get it typed again he was frustrated and took it out on you. He was rude and bossy. You probably ended up saving yourself from being called upon by him again in the future, so the laugh is really on him.
I doubt a word for word transcript would have read well enough to be used for a 'press release' and would have needed some work to tidy it up anyway.
I used to practice my shorthand at the meetings, it was purely to get my speed up and not for transcribing. Another benefit was relieving the boredom.