Went back to the same area this past weekend, but didn't take the TH. Instead, pulled the toy on my flatbed, went in a couple of miles, found a fantastic spot and logged over 60 miles of trail riding. Of the squatters I could see, they were the same ones there from over two weeks ago, but since I was further from the pavement, didn't see any more, and didn't run into any "wandering" the desert. Also had a chance to scope out more of the area and potential camping spots.
Checked out the Gates road open area on the east side of the Hassayampa, it is currently fenced off for "re-vegetation".