This exploit requires the Reins of the Traveler's Tundra Mammoth.
Have a player mount it, and have those who want to get to the top before the game starts mount it. The player on the mount should run around and jump in the room, and while jumping, the characters on the mount will randomly get teleported up. We noticed it happened more against walls or sometimes in corners, we can't always get it to happen every game.
For reference, we're using a blood elf on the mount.
Before *Useless* - By getting to the top before it starts, you can start behind LOS, you can get saps off in their square before they get to the top, get stealthies out before they get to the top, summon your pet so it doesn't bug, and even something like preventing saps by getting out to the side.