No Janie, Yost was hired after the 2009 season as one of several "special advisors" to Moore. Remember Yost was also out of town on an assignment when Hillman was fired, which was another pretty good indication that the firing was a rather quick decision by somebody else than Moore.
There was also speculation that John Gibbons was going to replace Hillman after Gibbons was hired following the 2008 season to be bench coach.
Meanwhile, Kuntz has been with the Royals in various capacities for years.