I missed this session by Brian Houston but my wife was there and keeps reminding me of this amazing statement that Brian made:
The church is called to be an outpost of grace in the world rather than a guardian of the law.
However that is expressed in our local church, this means we are inclusive rather than exclusive!
And that has been my ministry philosophy. No matter what a person has done or still does, I would prefer them to keep serving with me. I would rather that they remain within a positive life-giving community than without.