The line between WO and Serious Discussion has been quite thin for weeks (and probably from the very beginning, but I've not been active long enough to be able to know with certainty). I think nullius' posts are a category of their own and maybe Serious Discussion > Ivory Tower > Nullius' Dungeon might be a solution to avoid having his posts deleted from the WO in the future.

Now seriously, I thought it was virtually impossible to have a post deleted from the WO (except for the obvious trolling or spamming). There's probably thousands of other "serious" posts in the WO, so to avoid any discussion or confusion for nullius or any other member in the future, it might be useful to know what the exact reason for deletion was.