Considering fatigue, you touch a valid point there Charly. CHC had a similar incident some years ago in the Netherlands, where an S61 ended up in the same situation but was able to perform an over-torque climb-out after touching the sea.
If I do remember correctly, fatigue was in issue according to the findings. Also management attitude, deviation from SOP's and crew attitude for that matter.
There are indeed many (hidden) area's we still need to look into and find improvements...