That potter came back. He says I've ruined his social life. The only way to get the amphora off his head, apparently, was to whack it with a rubber hammer. That left him with a ringing in his ears, but that's not the worst of it.
All his mates keep laughing at him, he says. Apparently in his potting community, ending up with bits of broken pottery all over your head makes you a social outcast. So you could say he's been ostracised.