AUBURN HILLS, Mich. >> Stan Van Gundy kept Detroit's awkward core of frontcourt players together during his first offseason as team president, hoping the Pistons would show signs of improvement without any drastic moves.Now Detroit is 5-23. Time for a shake-up.The Pistons waived forward Josh Smith, less than halfway through the lucrative four-year contract he signed before the 2013-14 season.