Thanks Josh, but surely you can stop the flow/campaign from Salesforce by editing the member status.
Currently, I have a sister campaign that removes one from the campaign of 'Status is changed in SFDC Campaign' where the old status is MEMBER and the new is NON MEMBER and then under flow using both 'Remove from SFDC Campaign' and 'Remove from Flow'
I thought this would trigger the campaign flow in MKTO when we changed the member status in SF to NON MEMBER.