Apparently Geoff Muirhead sent an email to all MA Group staff, which someone has kindly forwarded on to me. It included the following comment:
John Spooner has been considering his future for some time and has decided to that now is an opportune time to leave MAG and pursue other interests outside the Group.
No "thanks" or "well done" from Geoff, so I'd say he was pushed.
At least one grammatical mistake too. Tut tut Mr
PR man that probably wrote this.