cubs trade Kevin Hart for John Grabow and Tom Gorzelanny

After winning his third consecutive start and pitching the Cubs into first place in the National League Central, Kevin Hart found himself left out.
That would be out of the organization, traded to the last-place Pirates on Thursday in a five-player swap that brings left-handed reliever John Grabow and left-handed starter Tom Gorzelanny to the Cubs. Hart, who has filled in for the injured Ryan Dempster and Ted Lilly, has a 3.18 earned-run average in those starts, including the 12-3 win over Houston on Thursday. I personally think that hart is and will be very good so im not sure if this was a good move even though the cubs did need
bullpen help. what do u think??