You say you saw the truck door open? As in - discharging the battery thru the dome light??? They might be out there hiking even now! :-) (I am personally quite paranoid about that issue when solo jeep camping. And even more careful when I have company.)

Not sure why the scenario requires them to move.

It might be helpful to walk back out a ways (any intersections within sensible walking distance?) and put up some SOS banners or markings to encourage any ATV or dirt bike riders to come to the campsite to help. My Colo experience is that someone will likely be along on a weekend day. It's hard to get far enough away if travelling by road unless you're the last one in the forest before winter sets in.