It turns out that the tower can get cleaved outside of the event, people are using it to "prepare" the tower and cleaving it down to low health.
When the event comes up, the tower is already at 5-10% health and literally gets destroyed in a few seconds (I actually just did that event and the tower legit just lasted 2 seconds).
And people are not even using the bomb mechanic at all, since you can just cleave the tower down. I don't think that has been the intention of the event.
Please change it that the tower can't get damaged outside of the event. Even better if the tower can just get damaged by the bombs spawning with the event. Give players passing by a fair chance to snatch that event.