I wonder where that info came from?? If it came from JS or his family, I'm tempted to discount it....if it came from LE, that is a very different matter.
Remember, Rhineland, WI is over 9 hours away from Morenci - and the opposite way from where the original LE searches would have us believe that JS was last seen.
As someone who is very involved with battered mothers/protective parents and their advocates, I can tell you that these supposed "groups" that would hide a child are way more common in the public imagination than in real life. First of all, JS had no documentation of abuse and no documentation that he had used all available legal channels to try and help his cause. So if such a group did exist, he'd be a very unlikely candidate for help, IMO. Yes, I know about Faye Yeager. However, this isn't 1987 anymore. Even Holly Collins, who was the first protective parent to successfully win asylum FROM the U.S. in the Netherlands, and had help getting out of the country, says this would have been nearly impossible in a post 9-11 world. And hiding small children WITHOUT their parents? Even less likely.
If the boys are being hidden, it is more likely with the help of JS's family. However, the evidence found in his home, and his other behaviors make no sense if that is the case. I say this sadly, because I would like nothing more than to for the boys to be found happy and safe somewhere.