As I remember from the Wizard World footage description, there was a description of a thug with a bomb inside. Could it be the fat thug in the background of this pic? //www.superherohype.com/imageG...ght/The_Movie/Movie_Stills/Movie_Stills_1.jpg Okay, now in the trailer, we see the Joker clapping in a weird way, but there's some focus on this clapping. Could it be that the rhytmn of the clapping could activate the bomb inside the thug's stomache behind the Joker. I know it's far fetched, but it crossed my mind. edit: Changed it to the right festival's name.