As you can easily see when you visit LessWrong.com, the site transfer is complete, and we are now on the new URL. The data import will run for the next few hours, and by tomorrow morning everything should be complete.
Let us know if you run into any problems, find any broken links, or anything of that sort!
Looks like the post author is going Roko and wiping everything he/she ever wrote from the site - I have no other explanation of what's happening. (To be clear, that's of course within their rights as someone participating in an informal social group! It certainly isn't that much of an inconvenience to the broader userbase.)
Indeed, www.lesswrong.com/users/conor-moreton seems to be doing just that.
I hope he's okay.