The really interesting thing about The Good Wife is that the "wife" in question wasn't ever actually that good - at least not in the way that the obvious connotation of the phrase would indicate. "Principled," or even "Pragmatic" might be a more accurate choice of word, if less provocative. Alica Florrick is, in fact, so principled that her morals wrap from "good" right back around to "evil" on a regular basis. So it was something of a relief last season when she finally hooked up with Will and threw Peter out; at the least it should have relieved her of some of her tension. And it worked! Sort of.
On to the episode: Alicia's been having sex, and is therefore enormously pleased with herself, complete with new bangs. She gets over herself pretty quickly, though, when she manages to get her client implicated for murder, via the usual shady-sounding leading questions. Add to that her... uncomfortable relationship with Kalinda, and not wanting to be seen with Will ever. Sure enough, it's business as usual. But with unusually passionate arguing.