ANAHEIM ANGELS Activated 1B/OF Darin Erstad from the DL; optioned 1B Chris Pritchett to Vancouver. [8/19] Activated INF Paco Martin from the DL; placed INF Craig Shipley on the 15-day DL, retroactive to 8/20 (strained hamstring). [8/21] Pritchett’s brief appearance was a nice reminder that the minor leagues, even in systems like the Angels’, have…