Response by jsw225 to my request for stories of Race Committee Screw-ups (originally written as a comment and reposted here so I can link to it).
My biggest error as a race committee was starting a race just as the wind was turning to the left. I didn't expect it to turn so hard. Half way through the race it settled at roughly 90degrees to the left and the wind died by half. Most people knew that it wasn't my fault, but that didn't stop them from teasing me.
The worst foul committed against me was by a Jury Boat during my match racing. Before this "Foul" my team and a conference rival had traded the lead 4-5 times. Around the last windward mark, they got a little bit ahead. We knew we sailed better downwind, and we weren't more then 2-3 boat lengths behind. Unfortunately, I cut the lay line too short. I poked the bow up and just BARELY cleared the mark. I missed by about 2-3 inches. However, the jury boat was on the opposite side, and saw the buoy move with us being very close. So they called a foul on us.
It was a perfectly understandable call. However, since we were up against a conference football rival, and it was so close of a race, we were very angry at the call. Especially since you couldn't challenge a Jury Boat's call.