Wow. A post about etiquette that calls someone out by name, with an insulting headline?

Face-to-face is the right channel for this sort of pointed criticism. Failing that, email might work. To pass the lesson along to the larger community, leave the specific names out of it - talk about "a big name in the community" who behaved badly. People who were there will know who you're talking about, but it doesn't become part of the internet paper trail.