David you have my sympathy. I can understand how folks get carried away on the internet as it is easy to get offended or offend. Although you may have insulted somebody the other person did the wrong thing as well. Accept the fact that you may have escalated the issue but move on.
If you were talking face to somebody in real life you likely would have walked away. I can see how things escalate on this forum as some people get snippy. I refuse to respond. Life is too short to respond to this kind of stuff.
Enjoy your day. Really. No sweat...move on.