Church actions should be set up to discern the right direction before it acts, to keep effective tabs on it while it acts, and to debrief after it acts, taking whatever disciplinary actions or clarifying lessons are needed. Do this, expecting that the Spirit will lead, if really asked and really given a chance to lead. One drawback of the church's role in discernment is that it is made up of people. People are strange, and sometimes do wrong. They can be fooled.
People love to be sweet talked, to be showered with puffery and to get their egos stroked.
They push aside what's bad news for the camp they're in. It's easy to become a yes-man. These facts must be kept in mind whenever talking about the church's role in discernment. But remember too that you also are just like the rest of us, and you too can get taken in. Neither the communicated Word nor the Church bridge between the biblical events and our putting them into living effect.