Something similar has happened to me before. I was sitting in the audience of a talk, and the speaker said something blatantly wrong about something I had worked on, so I asked them to clarify, and they responded with something like "they did such and such", which was also wrong, so I said something to the effect of "well, 'they' is 'me' and you're wrong because blah blah". They didn't have much to say after that.
The story reminded me of an analogous experience I had some years ago. A client asked me to help negotiate a software license agreement drafted by the other side’s lawyer. I saw that the other lawyer had selectively copied and edited a set of model software license provisions developed by an ABA committee. It amused my client when, on the negotiation conference call, I pointed out to the other lawyer that he had left out certain language that had been included in the model provisions to make them a reasonable compromise on the issue in question. The other lawyer was a bit discomfited when he realized that I was the lead author of the model provisions and the chairman of the drafting committee. (This actually happened twice, in the space of just a few days, for two different clients.)
