I can say that I had a brief exchange with Sandy Moss, just this past March.

He did reply to my inquiry about spiral screwdrivers and also stated 
that, "my interests have wandered recent years" and that "doesn't leave 
much time to pursue my old interests in screw drivers or other tools." 
He is retired and did list several new interests which seem to have 
superseded his long-time previous tool interests.

His website http://www.sydnassloot.com/brace.htm is still up, but maybe 
not active.

Cliff