There has been a lot of buzz about some PvE players being able to transfer to PvP servers in World of Warcraft with some gamers even pointing this out as a very unfair practice.

Apparently these transfers shouldn't have happened in the first place. There was never an option to move characters from PvE to PvP. Blizzard Poster/Forum Moderator Nethaera announced this on the WoW Forums. She made it clear that the transfer clearly violated the policies set by Blizzard and that the character in question is being returned to its original realm. Here's her exact post detailing the situation:

This transfer was based on an internal request that bypassed our checks and balances dictating how such transfers occur. Since the transfer violates our character-transfer policy, the character in question is being moved back to its originating realm, and we have imposed some additional measures to help avoid such situations in the future.

We made this correction as soon as we became aware of the oversight; we appreciate everyone's attention and input on the matter.