Is the theme of this season psycho women? You've got Ari's friend's wife (though her anger was understandable; maybe not her actions), Turtle's girlfriend, Ashley, Sloan...to a lesser extent (confusing the hell out of Eric). I'm sure I could come up with more examples, but, in the words of a great philosopher:
"Bitches, they be trippin'."
That said, the last few episodes have really bounced the show back quite a bit.