Before even getting into the content of the book it should be noted that the publishers had to do quite a bit of work to stretch this thing to 130 pages. Faster readers could probably finish this book in a couple hours or less.
I serve in the same conference of the UMC as Mike Slaughter and I must say that his church is very impressive, and the work which that church does in the Dayton area and around the world is staggering. It should be noted that this is not the book of an armchair emergent spouting off about how things should be different in churches, at the very least we can say that the author of this book has indeed put his money where his mouth is so to speak.
Throughout the book Slaughter uses the term "unLearning Churches" to describe churches moving in the right direction. I like the term, and most of us could agree that there are a lot of practices, ideas, stigmas, etc that need to be unLearned. At the same time the book borders on affirming that we ought to unlearn our doctrine if our doctrine doesn't seem to fit within a current missional framework.
A quote which I liked went like this: "unLearning churches will focus more on church health than church growth." (pg. 29) The focus is in the right place. Yet what is the means of achieving church health? For the author it means getting everyone involved in doing something for the kingdom. That sounds great on the surface but leaves us with a problem. The problem with this book is that it is 100% about sending and doing, and 0% about who has already been sent, and what has already been done. In other words this book deems the Gospel to be Christ working though us as opposed to a past tense event that has happened for us. Luther would have destroyed this book because of it's constant confusion of Law (right actions by us for others and God) and Gospel (the work of God FOR US).
Jesus is treated in this book as exemplary, yet the "given for you" message of the Gospel is altogether missing. After reading this book I have received nothing but commands, tips, and things to do. Yet what I need, and what my congregation needs, and what this world needs, is to know the reality of what Christ has done for them, by living, dying, and resurrecting on their behalf. The message of this book is to go fix broken people, yet for the broken one who needs fixed this book offers little.
A two star rating means I believe this book was 'OK' and that's pretty much what I think. Not all bad, definitely some good nuggets in there, but not enough to merit recommending this book to others.