Regarding the recovery: If they are able to properly orient the spacecraft using solar pressure alone, couldn't this approach be purposely engineered for disch

Regarding the recovery: If they are able to properly orient the spacecraft using solar pressure alone, couldn't this approach be purposely engineered for discharging momentum from reaction wheels in other craft, instead of expending propellant? Source: http://www.nasa.gov/kepler/keplers-second-light-how-k2-will-work http://www.nasa.gov/kepler/keplers-second-light-how-k2-will-...