Board Thread:Support Requests - Getting Technical/@comment-4748628-20140610161332/@comment-452-20140611162957

With this, you can simply move to back out of the Message Wall namespace, or delete it using AjaxBatchDelete or equivalent API functions.

I just tested out the scenario you linked to, but I had no problem recovering the poorly named page.

See http://201405test.wikia.com/wiki/Special:Log for proof.

edit: it looks like you never resolved the problem - why don't you just move the page back out?