The dude knew, he wrote about it in his book, and his story falls apart at least as far as not knowing about it until recently.

“It kind of felt like a formality, as I’d been a part of the family for more than a year at that point. Since I was already over the age of eighteen and considered an adult by the state of Tennessee, Sean and Leigh Anne would be named as my ‘legal conservators,’”

As for money, he was in the NFLPA, which should mean that he qualified to use their “qualified financial advisers” and the fact he hasn’t raised a fuss about anything money related except the movie, that leads me to assume they weren’t skimming off him. The whole thing is a fucking mess, but I am not convinced they did anything wrong nor am I convinced they are innocent. But, I think pubic opinion claiming they are evil is a bit premature since his book says he knew.