From what I hear you have it in a nutshell. which gets me thinking about everyones favorite sunbus driver, once CAsA has finished with barrier what's to say they won't go after him, after all he just admitted to flying back to base with a known defect and then NOT writing it up there either!
The UNCASA have been known to offer immunity for individual transgressions in return for signed statements against operators. You'd better get that in writing though!
Oh ... by the way Sunbus driver, been 24 hours, still waiting for your side of the story. You had a pretty big mouth when you were talking to CASA, time to put up or FCUK OFF altogether, you're pretty unemployable anyway.