Had this happen last night in CT:
  1. Group got to the boss fight with the 3 Vassago and the bomb in the center.
  2. Allagan Grenades make it to the center, main bomb blows up, party wipes.
  3. When we reach the battlefield again everyone is locked out. The bomb is in the center of the battlefield blowing up over and over again with no one in it. It never reset.
  4. Waited until everyone left CT to see if maybe one particular player was bugging it, however even as the last player in the instance I was still locked out and the battlefield never reset. Had to leave the instance and queue back up in the Duty Finder.

Server: Gilgamesh
Date: 12/31/2013
Time: 11:00 CST
Player: Blaire Osiris
Location: Crystal Tower

Screenshot:


Notice how the bomb is in the center "pulsing" his explosion and everyone else is locked out. Everyone had to leave the instance and try Crystal Tower again.