I was actually on the trebuchet. We had set it up at garrison and I was attacking Ascension Bay. TC then decided to make a push close to the garrison and at first they tried to hit us with Arrow Storm, but failed. Then TC followed up with arrow carts. The AOE circles that popped up for the arrows surrounded me for a good few meters, making it hard for me to escape the area. A few CD men dropped down and killed the arrow carts before the Trebuchets were destroyed. After about 30 seconds, the trebuchets spontaneously died. Nothing was hitting them.