Foolish impulse by the Red Sox management. Joe Cronin once said, "The players make the manager". (Said just before he managed the Nats powerhouse team in 1933 that beat the Ruth/Gehrig Yankees for the AL pennant). In this case, the Red Sox players un-made their manager. I'm not sure I'd want any player from that team on the Nats. (Yes, refrence to Crawford / Werth. I like our guy better.)
I like Davey. He's not perfect, but he knows a lot about baseball, and knows the Nats. Keep Davey as long as he wants to manage.