I think that is likely. I remember specifics up until a few hundred feet from where I was found. There was zero traffic in this neighborhood and the roads are good. I was found in the middle of the roadway, slightly to the right of center. That's where I'd normally ride in that area. The big bruises are on my left backside (butt, shoulder, ribs) and the major helmet damage is on the rear. The bike's wheel/fork is twisted almost 90 degrees from the handlebar but still very tight (so it didn't come loose while riding). The saddle is scuffed across its width on the top back.

I think I hit something at ~25mph that caused me to endo with the bike, landing on my back. It is an area that deer cross and I recently noticed that the bushes on that side of the road have become quite thick and high.