The rest of the "family" is butt hurt and won't talk to Batman, and Joker falls off a cliff never to be heard again for the next few months. Little more involved then that, but not by much. Everyone is completely fine except for apparent trust issues because these characters haven't ever been in pain or under duress while working alongside Batman. Or you know, been paralyzed, beat to death with a crowbar, have their parents murdered in front of them, be trained from birth to be an unstoppable killing machine, etc.
To be perfectly honest, in a bubble it's a pretty good comic, but considering all the hype surrounding this storyline, it was a gigantic heap of bantha fodder.