If the phrase Federal Vision means anything to you, this post is a good summary of the theological question at stake. It's coming down to this: "what does saving faith look like?"
Wilson has a great paragraph at the end putting controversy like this in perspective:
"We are (all of us) going to give an acccount of ourselves, down to every idle word, every motion at presbytery, and certainly down to every blog post. Because you have been justified by the free grace of God in Christ, this means that your misrepresentations of my position have been as forgiven as it gets. The judgment seat we will all stand before will not be that kind of judgment seat -- we will (all of us) have to walk past the altar where Christ sprinkled His blood before we get to this seat of evaluation, where Christ sorts out our tangles. But when He sorts out our tangles, as He promises He will, you will shake hands with me, brother, and we will be able to chat in true fellowship while the angels are passing out the sheet music."