Wow man, I just listened to an interview with him on Crash.net, and he sounds just like him. The height also checks out as he's only 5'8, Good call.PFFFFFT!
I know who the stig could as my uncle had dropped off a car once and saw him in the white racing suit.
Apparently it's Darren Turner who drove one of the astons at silverstone in 2005, maybe thats why they got to have the DBR9 around the track just after the event?
I'm not guaranteeing that this IS the stig, but i'd put this guy first before anyone else.
Heck, maybe someone would be on my side for once and check this out...