Too much transparency?

In the time spent on the road with Casting Crowns, Mark Hall often called the church to lay down the 'superchristian' attitude (as he coined it).

Superchristian (singular noun): Soo-'per-kris-jun
1.The superficial facade that 'I don't have any problems. My life's fine and dandy because I have Jesus'.

He'd often say that it doesn't bother the world so much that Christians sin, what bothers them is that we act like we don't. He'd follow that up by teaching that it's hard to hear about the truth from a 'perfect person', and instead of seeing a bunch of superchristians, what the world really needs to see is a bunch of broken people made whole though Jesus Christ.

I've had some awkward experiences attempting to be 'transparent' with a congregation. How does a pastor determine what they share about themselves with their congregation and what they don't? How honest about their personal and spiritual flaws can a pastor be with his congregation without jeopardizing the spiritual credibility necessary to lead? Hopefully despite his or her flaws, there is enough grace in the congregation and integrity in the pastor that one doesn't need to hide too much. But the question still remains, how much transparency is too much transparency? How can a small group formations pastor teach openness and vulnerability to their own small groups without showing some themselves?

~sigh~ the dilemma of seeking an infinite wisdom through the limitations of a finite mind...