Derek Weir is to step down as vice-chairman of Motherwell and will leave his position as an SPL board member.
The news comes as the Fir Park side denied any involvement in the league reconstruction plans sent to SFL clubs last week.
A spokesman said: "I can confirm no-one from Motherwell Football Club had any input into the production of the document and in fact had not seen it prior it to it being distributed.
"Furthermore, no-one from the club has taken part in any discussion with anyone from the Scottish Football League. Any discussions between the Scottish FA, Scottish Premier League or Scottish Football League would take place between the executives of each organisation.
"We, as a club, will not be a party to threatening any other club. Regardless of what league they may play in, each club is free to make their own decisions on any issue as they see fit."