yah i think most people are embarrassed rather than angry that their stuff was sold off....it WAS their fault afterall. But yah i've never seen anyone come up drunk or mad or anything.
I know one guy in NYC bought a room in Harlem, about 5 years ago. Paid for the room, unloaded the room into his truck and as he was getting into a guy about 6'5 put a gun in his gut told him to move over and drove the truck to his house where he had two buddies unload everything and then let the guy go.
Guy called the cops but no witnesses other than the guys friends which were nowhere to be found.
Another one I saw a guy and his prostitute girlfriend (evident for multiple reasons) came to an auction, no one ever saw them before but they stood out. Once bidding started at one room the guy started loudly stating to the girl that if anyone bids against him on their room he would teach them a lesson. Everyone now starts laughing and we get to his room. He bids $10 and looks around like he will fight anyone that bids. So of course the bids start coming from the back of the room 100, 200, 300 ..etc. he finally startings cursing, takes his shirt off and pulls out a gun from his sweats. Grabs a random guy and starts hitting him with it. Most people ran, cops came both were arrested.
Those were the two I've heard about and thats in about 10 years of doing it.