Guys;
I really appreciate the thoughts and offers of help. Truly nice of you. For now I am just assessing my options.
I was just so happy to get the excess power heating water and then this. You take the good with the bad, get up, dust off and move on.
I think my original failure assessment was wrong.
I now think that the turnbuckle bolt failed or came out and even with a safety loop of cable around the connection it got loose and pulled the safety cable through its clips? I know there was a safety loop but it is nowhere to be found but high dry weeds make that no big deal you could hide in there yourself fairly well
I am not skilled in forensics and this analysis may change.
I confirmed that the tower is bent 3 or 4 degrees out of straight near the first (welded) joint but the joint is not cracked or anything just has a bend below it. I can't seem to find enough wood to create 3 blades. I found enough to see 2 were likely whole on impact with the ground which might mean one failed, blew away and it went shaker from massive imbalance and then failure is just a matter of time even on a massively strong tower. I drove all over up there and walked around in the nearby brush and found no blade debris other than what was on the ground at the point the head landed.
I got the blade pieces collected, removed the hub and slid the head off the yaw stub. I checked the rotors / hub for tweaks and it seems 100% no runout on the mag plates visible to a finger "gage", no tail damage, stub looks straight and stator seems undamaged. This thing is built like an anvil, nice heavy steel took the brunt of the impact cushioned by blades hitting first.
Thanks again, folks.
Tom