Former NFL player Michael Oher claimed that he was never legally adopted

He always came across as being a little distant from the movie. His take seemed to be it wasn't accurate and it made him look dumb, but he realized that it was an inspirational film to a lot of people and didn't want to take away from what it gave to others. So maybe not mad, but close.
i seem to remember early on he wasn't a fan of how it portrayed him, and he let it be known. This isn't something new 'out of the blue'