Forgive an intrusion from an unqualified observer - but if Mr Irwin was not in breach of any published procedures, work instructions, authorisations, etc, then does this judgement put engineers working on any aircraft that might have an accident in Greece in exactly the same position?
Have any airlines' legal departments been looking at the ramifications for their own operations? Or have any engineers within those airlines expressed their concerns to management?
And I bet people are asking whether their employers have legal assistance insurance cover!