He had little chance of making the team. Brian McCann, who probably had no chance though right now he’s a more finished hitter, was also sent down.
The worrisome thing is that this story says that Jordan and Mondesi are starters and Langerhans is the fourth outfielder, like that’s settled. At the risk of starting another war in comments, that is a very bad sign. A good sign is the claim that “at most” there’s room for one more outfielder (ten remain in camp, so that’s six left out) on the roster; previously, I was pretty sure they’d stick with four outfielders. Could it even mean that they’d go to eleven pitchers, at least to start the season? Naaah.