The Chiba Lotte Marines apparently asked pitching coach Takashi Nishimoto if he would accept a reassignment to Ni-gun pitching coach for the 2011 season. Nishimoto apparently balked at the idea, put the offer on hold, and hasn't shown up at fall camp.
The Marines apparently weren't thinking about this move as demotion, but rather as a way to re-allocate their coaching staff based on what was needed. And with Hiroyuki Kobayashi leaving via free agency, the Marines apparently feel that Nishimoto could do more for the team by coaching the youngsters at Ni-gun and getting them ready for Ichi-gun.
That said, the Marines did finish the year with a team ERA of 4.10 (fifth worst in the PL) and there were a number of times that Nishimoto and Norifumi Nishimura couldn't agree on certain things during the season. In the end, it seems the Marines felt that Nishimoto was better at coaching than at giving Nishimura advice on how to use the pitching staff effectively.
Nishimoto's contract runs through to the 2011 season, but it's entirely possible that he might end up leaving the club.
Other than the question mark hovering over Nishimoto's head, the Marines will likely stick with their current core of coaches.