Why is Luongo the center of attention right now?

Roberto Luongo is an amazing goalie that hasn't, well, been playing amazingly the past two games. It doesn't help that his teammates aren't doing much to help him out. Boston has undoubtedly stepped up their game ever since Nathan Horton got injured. I think that the #1 problem with the Canucks at the moment is defense. Obviously they stopped caring in game 3 after Boston's 5th goal of the game. In game 4, you could tell that hardly any of the Canucks players were fired up. Being shut out 4 goals to none makes that ever more obvious.