I'm with you, Steve but it could have occurred anywhere between the trailhead and Westwood. Don't know why the search is limited to Inyo. This story, like so many others, is full of holes.
The top story says he was going to hike on the 6th, return on the 9th and that he was "last heard from on the 8th." 6th was Friday, 8th was Sunday. Story doesn't say what the family heard on Sunday, but its pretty reasonable that he was no longer in the mountains, but headed back down and back to Westwood. He could be anywhere.