KeSPA official said: "the negotiation started back in August. During this process, we fully respect Jaedong's decision, which is not to go back to JinAir. Where he will go eventually is completely up to for him to decide."
The contract with JinAir Greenwings is ended. Now Jaedong can go to whatever team he wants. This includes staying in EG or going to other teams.
Korean source: http://esports.dailygame.co.kr/view.php?ud=2013120314111555570