Actually he's playing catch-up, and coming out looking all angry is just going to make him look all butt-hurt over getting his ass kicked in the first debate, which will make him an object of ridicule more than anything else. It isn't going to shift the balance (Of course, it'll get rave reviews from Jolly Old Kris Tingle, the Daily Show, and Letterman). The basic problem with the 'Angry Black Man' thing is that Obama not only ain't all that Black thanks to his silver spoon life, but even more, he basically doesn't get the kind of ghetto-street-theater-angry these dipshits want, his anger is more of a sullen backstabbing kind of anger than the in-yo'-face fiery bullshit the DUmmies want.
A 50-50 performance, or even a modest win, is not going to put Obama back on top after the drubbing he took in the first debate, the best it would do is stop the bleeding, but it's starting to look like the non-Dem-base electorate is turning on Obama and finally feeling the freedom to admit the Emperor appears somewhat sparsely dressed for the weather.