I'm not sure what to make of this. It got my attention initially because the press reports said the hiker broke his leg around Quail Mountain. That's pretty remote and would be a big damn deal. So I've been watching the local outlets for more details, but strangely, didn't find much.
Then Z107.7 FM fills in the details, and it's not anywhere near Quail. It was just 1.5 miles from Keys View, and according to the article he was only about a quarter mile east of the road. It seems like with that sort of proximity he should have been able to find a high point and signal the road with some sort of reflection. I understand he had a broken femur (must have been a good fall) but in his video he talks about crawling up to a plateau.
I'm going to speculate he was attempting some sort of cross country trip to the Lost Horse area, which is sorta weird in the heat of Summer. There really aren't any other destinations out to the east of Keys View Road. And I'm inclined to think the location description in the Z107.7 piece is accurate because of its level of specificity.
It's another good example of how the park feels benign and friendly, and so much like a...park. But get a short distance off the road and the place can really mess you up, sometimes fatally. The average park goer has no idea how easy it is to die out there.