A post by SubieGal over on DirtyImpreza stated that it was indeed one of those huge and unforgiving trees. Apparently he hit a tree in the b-pillar on the driver's side at a high rate of speed.Don't know the circumstances of this particular crash, but I do know that the huge trees lining thos fast n flowing Olympus roads are VERY unforgiving.
So send good thoughts to Marker family and friends, at least he passed doing dsomething he was very very good at.