TC, there is no thread creep here really as the accident is inextricably linked to the standard of AW instruction received by the crew.
212 - reversion should be instantaneous but recovery is assuming that the correct profile parameters are being flown, the aircraft is below max training weight, within C of G and the training captain is adequately trained and experienced on type.
When Nr reaches 80% it is not recoverable, the tail rotor is no longer effective and it is game over. This crew were very lucky that the AW139 is so well constructed that they were able to walk away from a >7g deceleration.
This accident is a perfect example of the formulae: Poor training + poor piloting skills + cultural attitudes = accident waiting to happen.
Sadly there will be more.
Last but not least, the Agusta Training Academy had been run till a short time ago by a Brit so do not complain with Italians but ask the UK people what they have been doing in their period to pass their outstanding organization and standards to the poor illitterate Italians!
Mirko, the British have a saying: 'You can take a horse to water but you cannot make it drink'. To make it a little clearer for you - AW Italy is the horse and the water is organisational skills and standards. Even when the water is taken to the horse you still cannot make it drink - unless it wants to.