According to this, his wife filed a missing persons report on Monday. Stahl grew up in Plano and Richardson, and I recall seeing him at City Tavern one night a while back, around the time Night of the White Pants was filming around here.
(Aside: two other local connections, both Jim Schutze related. Stahl starred in Bully, based on Schutze’s book of the same name, and — unless my memory is failing me — that yellow muscle car in the White Pants poster (click that link) belongs to Schutze. I swear he drove it to the Observer office at one point.)
Hope he turns up soon, and safe.