Just look at American Airlines MD-80/SouthWest Airlines 737 incidents.The roles and actions of both F/O,S,piss poor at best.A physical confrontation in the cockpit,is definitly not the way to go.The company I work for has tried in scenario format to try and resolve this issue of "taking command"from a rouge pilot.For as many people involved in the disscussion ,there are as many ideas and ways to deal with it.I still dont think weve got it right!!!