No. The two were camping in a place that was basically known only to locals - indeed, at first there were problems determining whether this was public land at all. There was a road that went past that creek bed and even the person who found them (a good friend) had a hard time finding their site, it wasn't very visible from the road.
You can look at aerial views of the spot on maps.google. Almost no one camps there - most people camp a few miles away in the more developed dispersed camping area. Their campsite could not have been more remote, the reason they were so surprised to see the "creeper" is that no one went out that way. So when some rando started showing up nearby, and then clearly was staying overnight too close for comfort, they were worried.
There was no one else out there - not that night, nor at any recent time, IMO.
Here are the approximate coordinates:
38.539313. 109.329394
I have more precise coordinates somewhere - will try to post later, but you can easily see that it's not an area with any sort of developed camping and they took their vehicle somewhat off road - to be invisible from that secondary road and to be closer to the creek.
Also, IIRC, this is a sex crime as well...from what we read in MSM...it's not over a campsite.