Imagine that, Batman leaves Gotham city on an errand, and when he comes back, the whole place is literally in flames. Whoops?
Also, Steph wants Cullen to help her find Vicki Vale, because everything else is just a distraction.
It's saying something when a LoSH character hanging out in Batman is hardly the most WTF moment of an issue.
The circus is a strange place, evident by the endless Nightwing stories that come from it.