Feely is the Chair of the Well Society Board, so sits on the Executive Board in that capacity. He hasn't resigned so remains on both Boards. Dickie resigned from the Well Society Board, but, as far as I understand, he was only on the Executive Board to represent the interests of the Well Society Board, alongside Feely. Therefore, as he resigned, surely his position on the Executive Board is untenable, unless he was an Executive Board member first and Well Society Board member second. Someone else might be able to shed some light on this. McMahon will be resigning as Chairman, which will end his membership of the Board.
Notwithstanding, today's statement from the Well Society indicates that they are looking to reset the relationship (and I assume clarify roles and responsibilities) between the two Boards. They state: "...now is the time for a significant reset in the relationship between the Club Board, the Well Society Board, Society members, and the Motherwell fanbase as a whole..."