We are currently using Bungee. That mean's our other servers are still in use, they are not gone. just use the command /server to see the available servers, or just do /server survival to get back to survival.
I have not fully integrated this with the game play because we still have testing to do, but I am putting this info up for those who want to play around with TARDIS. When you join the mmo server you will automatically receive a book of TARDIS.