First, let me say that the author of the blog, Church Discipline, is a well reasoned, and balanced individual who has some biblical insights into this controversial subject. I thought that I might give a few thoughts myself. You might also want to check out this site as well.
The Church is a Community, a nation, a people, and each congregation is a subset of the larger Community. We have our leaders, our own financial system, our own by-laws, and our own culture. We also have our own justice system, so to speak. We are called to constantly exceed the righteousness (even self-righteousness) of the religious world around us. Further, we are called to be the first to apologized, whether we are wrong or the wronged. Further, the leader/congregant model is often seen as shepherd/flock; indeed, ‘pastor’ is better translated as shepherd.