I personally have never heard from Mark Scott and to the best of my knowledge neither have any of the officers of Slabfree.

Contacting all 5 officers would be the way to start.
Any contact through David would be meaningless and seen as a way to circumvent the process.

Mark was one of a small number of movers and shakers that brought the Slabbing companies to our convention. Mark had a table set up with many slabs on it for sale.

Mark came on this BB and told the world that a Slabfree member threw a rock through his very large showroom window with a Slabfree note attached to it.
That DID NOT happen per police reports.

Before I would even consider voting to remove him from the list, I would need to see a request from him for removal, his reasons for his removal, and a retraction of the rock throwing incident that did not happen.