"The crashed helicopter's tail rotor bears more than a passing resemblance to that of the cancelled Boeing-Sikorsky RAH-66 Comanche "
Actually, what you are referring to looks a bit like the Main Rotor Hub (five bladed) of the Comanche.
I am trying to understand who is seeing a forward sweep of the horizontal stab. In a hover, stab is typically 40 degrees down from the horizontal, in the S-70 class. I think perhaps the horizontal stab being in hover configuration is being seen in these photos as "sweep" of the horizontal stab.
Or am I missing a few photos that show a real sweep?