On the very first page of this thread, you can find a note of the successful trade and the name of the person who accepted the BTC and send the Pizza:


The seller goes by the username "jercos" however when I tried to look up the forum, I couldn't find the username in the list. Probably he left the forum or his account got abandoned during forum migration/upgrades. May if jercos is still lurking around using a different account. Only he can answer.