"He is just following the Purpose Driven method (as I understand the problems there)?"
No, he is following his own method of implementing the "Purpose Driven Church" method. However his problem is more for ignoring indiscretions in his staff from what I read, and then covering it up.
The "transitioning" process (from non-Purpose Driven church to Purpose Driven, including marginalizing and getting rid of resistors), that goes with the PD method, was the genesis of many the problems prior to the public knowledge of the indiscretion (which ocurred years before this pastor was at the church).
By the way, do you agree with the Purpose Driven method of shaping the gospel to meet people's felt needs?