Former NFL player Michael Oher claimed that he was never legally adopted
The truth is out there somewhere.
One thing we do know is that there is a conservatorship - it was put in place in 2004 and is apparently still in force, that's what he filed to dissolve.
In Tennessee (where this is happening) and everywhere else, a conservatorship is a device by which adults surrender certain decision-making to another more competent person. They're specifically for when a person "with a disability who lacks capacity to make decisions in one or more important areas." Tennessee Code Annotated 34-1-101(4)(A).
Did he know he was agreeing to a conservatorship in 2004? Did the court adequately inquire into whether he was actually in a lack of capacity at that time? Did he really not know until recently that he was under conservatorship? Were his 'adoptive' parents actually performing as conservators all this time?
In the years since 2004, he made college honor roll twice, graduated with a degree, and played in the NFL for nine seasons, earning $34.5 million. Clearly this is not a person that lacks capacity.