Barrera is a good-enough backup catcher to replace Adams. Let Adams play full time in Rochester.
Cruz, though, has not hit. That he cannot play the field means the Nats have a tiny bench and a nearly guaranteed O-fer. Post reports that Cruz was pulled because he had a stiff back. Best place to recover is in nice, warm Florida on a 10-day DL rest.
Then switch off YadiStar, Thomas, and Strange-Gordon around LF and DH. Start now, with all the room in the outfield in Denver.