It's no longer a matter of whether Jim Buss had to go - duh - and if Mitch Kupchak had to go with him.Buss was a playboy on a lark who was rarely in the office other than public appearances, if a benign one who fell in line behind Kupchak.Kupchak proved himself in better times, rebuilding the Lakers from the ruins after trading Shaquille O'Neal into a two-time champion, but was seen as joined at the hip to Jimbo .