I found the direct quote from theymos, and here's it below
Quote from: theymos
1, 2, and 4 exist in the staff forum. 3 was permanently deleted at some point (it must have contained Satoshi's real name and address).
In case it wasn't obvious enough that he was joking, he also clarified it in this post:
It's called a joke. 
Why would someone who has gone to such great lengths to hide his identity, name, address, IPs, etc. then openly post his name and address anywhere online, let alone on a forum he was about to open to the public and give other people access to? It makes no sense. Far more likely is that he was simply testing out the trash can and moderator functions on deleting threads.