Allocation of Pastoral Resources

An interesting quote:

Ministers pay far too much attention to people who do not come to services. Those people should, generally, be given exactly that disregard by the pastor that they give to Christ. The Christian leader has something much more important to do than pursue the godless. The leader’s task is to equip saints until they are like Christ.
-Dallas Willard

To what extent should a pastor pursue the AWOL? At what point is it inappropriately neglecting the faithful sheep?

Any "war" stories along these lines?

On a related note ... in your personal experience, have you seen much success in bring church members who have left back to the flock?