I don't know if Kei can get his name back. Many-a-pages ago, someone with the name Kei PM'd our Kei, asking our Kei if our Kei was the original holder of the name Kei.
So, now, some Kei, preferably our Kei, is on the naughty list, but now, now there's no Kei posting here, and instead, we have Some-uma.