Off topic, but I think we one-upped you on the "oops I deleted a moderator" front when, in 2007, one of our admins managed to delete herself (largely as a "see, the vBulletin 3.7 software's super smart, I can't possibly--oh crap." manuever). It's still a running joke. Although the 10 hour metric for that many posts makes me frown a little bit. I'm suddenly not looking forward to handling importing 1.6 million posts in a cloud computing setup when that day comes (which probably still won't be for a year or so at least; we're still not committed to a new platform as nothing is "there" for us versus what vB 3.x offers us now still). I'll have to see if I can attempt some voodoo mad science some time using my private server as testbed to get a metric of what I should expect...
Didn't take me 10 hours to import a 1.6M site from IPB - 3 hours max. It took longer sorting out the mess of permissions (the previous setup's fault not XenForo's) afterwards