I had something similar happen to me this week, and let me just say, MAN, DOES IT FEEL GREAT TO MAKE SOMEONE EAT HUMBLE PIE.
I can't stress enough how important it is to not be a dick to people. You never know what an enterprising person might do (or who someone might be related to COUGH COUGH) to make you take back everything you said or did to them.
So don't be a dick. It's not cool, and in the digital age, asshaberdashery lasts forever.