In context he's clearly not, though. It's the whole "I'm not touching you, but I'm going to be as belligerent, obnoxious, and aggressive as possible without actually manning up and taking a swing" stance. "I'm in your face, what are you going to d....owwww, you hit me, whaaaaaa."
Preview frame alone makes it look like the fan is reaching for something from his backpack.
In context he's clearly not, though. It's the whole "I'm not touching you, but I'm going to be as belligerent, obnoxious, and aggressive as possible without actually manning up and taking a swing" stance. "I'm in your face, what are you going to d....owwww, you hit me, whaaaaaa."
Classic metrosexual fighting stance.