 Between 2003 and 2007, he also acted as a roving minor league instructor and spring training instructor for the Padres.In September 2008, Joyner resigned as the hitting coach for the Padres due to a number of factors including the team's low rankings in batting categories and a difference in philosophy in regards to hitting with members of upper management (most notably, CEO Sandy Alderson).The resignation came as somewhat of a surprise due to Joyner's relationship with the GM/VP Kevin Towers.