Running through TFB 8-man HM a few days ago, we noticed a peculiar device that spawned.
It was called the "Hypergate control tower" and it spawned in the area of Kephess the Undying, after we had killed it. We wiped on TFB 1-time, and noticed this control tower when rez'ing and running back to TFB.
We tried to click it, which spawned a system message that said, "Access denied, you have to be corrupted to use this."
Quick google and TORhead search found this, although there isn't any additional information. http://www.torhead.com/npc/34e8EQy/h...-control-tower
Theory: clicking it in "dreadful orb state" will close the hypergate above TFB's head, thereby changing the 2nd phase of the fight?