I don't know how HE would see it, I can only use my own judgment as to what is the right thing to do. In order to apologize at the JBF, I would first have to make them aware of my initial offense over here. That would be a distraction that they never asked for and don't need.
I know that some members of the JBF are aware of Comicon, and recently we have seen Byrne himself commenting on references to himself that he has seen around the web. So I'm not hiding anything by posting criticisms here but not there. I'm just not rubbing it in their faces.