I think that if Indonesia goes through with these executions there will be increased political tensions between Indonesia and Australia, and I don't think either country wants that.
This came through on Yahoo news this morning,
https://au.news.yahoo.com/world/a/26467267/jokowi-open-to-views-on-executions-ahok/
Jakarta has the ball in its court at the moment and I think they are using it to make a point, particularly after revelations last year over the Australian spy agency phone-tapping Indonesian officials last year and issues over Australia taking a hard line on refugee boats from Indonesia. I would like to think Indonesia is holding their ace card and applying some political pressure for as long as they can and will hopefully give these two life once they feel their point has been made.