OK, so this JB Jr. play is getting some hype on the MLB website email today.
http://m.mlb.com/video/topic/51231442/v33665447/As Remy points out, JB Jr. breaks in and then goes back to the wall. He makes a toss to 1st from the wall that is about 4 feet off line but in plenty of time to double off the runner.
I'm thinking Span makes the correct read, coasts under the fly, makes an unspectacular catch, hits Desmond with the cutoff throw, and Desi throws to ALR on target for an unspectacular play that still records two outs. This is an example of how the eye can deceive you as to how well an OF plays his position.