It is one thing for a CFO to prepare a poor set of slides, but...

It is one thing for a CFO to prepare a poor set of slides, but presumably the entire Board signs off on them?

And I agree fully, a project writeback is simply not "extraordinary" for any construction business. They may not have lost $15m on a $30m project (Hastings) before, but they would be writing projects back every year because of unforeseen circumstances. So that is a very strange comment for the CFO to be making.