Lots of ideas there. Overall nothing particularly shocking.....if fact, the only part that might be incredulous would be to be surprised at this at all!!
Sure, this happens to some pastors (and a whole bunch of other things, too)...but the opposite happens to lots of others, a great deepening of faith (especially in light of critical analysis). That's just people.
Sometimes actual belief disappears, but often it's the mythical and magical underpinnings that evaporate...which leaves one with what? Depends on the person and their journey.
I don't think actual disbelief is as widespread as one might imagine, but among the clergy the shades of grey are probably pretty wide, which can leave many questions with various answers. That can really work for you as well as against you, depending on where one finds oneself.
On a critical note I think one or two statements made in passing were way off-base, but they were somewhat ancillary to the main presentation.