Forget the tail strike theory
Firstly, thanks guys for the encouaging comments, and no, I am not a spook for any company. I am a private consultant having recently retired after 37 years involvement in aircraft science and maintenance on military aircraft. I am happy to share my specialist knowledge on adhesive bond forensics in the hope of improving safety.
Now to deal with the tail strike theory. If the adhesive bonds were damaged by impact or overload of any description, then the failure would be by cohesion, with the adhesive fractured. There would be residual adhesive on both surfaces. The descriptions from people who have taken sections from disbonds clearly indicate interfacial failure, and a well bonded structure should never fail interfacially even under impact conditions.
And Yes, 212, I do have a friend who is a metallurgist and he is a damned good failure analyst.
Still waiting to hear from Agusta....