POTOSI PEAK ALTERNATE DESCENT ROUTE ILLUSTRATION
RED: Descent route as described HERE. Involves a Class 3 chimney down climb on good rock (good for Potosi, anyway), followed by a loose screen descent. Best of the three options.
BLUE: A possible option, but looks perilously loose and could be dangerous in wet weather, and the entrance looks messy
GREEN: Scree sprinkled hardpan at a steep angle makes this choice iffy at best, and it could be perilous in wet conditions

Photo and annotations, and route details graciously supplied by SP member
Ryan Schilling. Thanks Ryan!