If his profile says "never logged in", and he already posted in the forums, it is because he was dead, and now has respawned.
The "never logged in" feature, along with the "This player is banned", is a good way to track a character and see if he is still existing.
Just out of curiousity, is the profile still indicating that the player is banned? It was a nice way to track down respawns, including the ones with hidden profiles... I wonder if it still works.
Also, guest status is cool, and for this kind of question I suppose OP was stalking the guy on the forums, so he found the way to ask without revealing his true face. The guest status is a nice way to avoid any IC/OOC separation flaws, since a lot of people (including me) are often using OOC methods to get IC informations...