I've never borne JP any hate, CBK, but I remember last season when Adkins was asked in an interview about the possibility of him being recalled from Blackpool to cover for injuries to Lallana etc., and Nigel simply gave a very stern "No".
None of us will ever know the full story, but there must be reasons why someone as apparently approachable as Adkins should take such a firm stance against a particular player. He must have been some sort of disruptive influence at the least, I would guess, so it is in everyone's interests that he has gone, even only temporarily.