For a 4th round pick.
Two thoughts come to mind:
1) I guess the Redskins weren't happy with the replacements they had for Dockery.
2) The Jets are looking to start either journeyman Adrien Clarke or rookie 6th round pick Jacob Bender (of Nicholls State, where they ran the triple-option). Bender gets first shot, starting their preseason game this week. Yikes.