i kinda had a similar problem, with my name going from "cottoncandylocks" to "mayhem" to "sera369" and now back to "cottoncandylocks"....
i did it cuz i get very paranoid and sometimes maybe alter, and i feel another me inside peeking out....
its a trippy thing, im rambling now....
but if you dont get your OG name back you could make a pretty signature like i have that stays the same no matter what your display name is........