The NFL has fined Brett Favre $50,000 — but in a surprise twist, it has not determined that he violated the league’s personal-conduct policies.

Instead the fine is for refusing to cooperate with the investigation into whether he sexually harassed Jenn Sterger when both worked for the New York Jets.

NFL spokesman Greg Aiello has confirmed that the fine is for failure to cooperate, and not for violating league policy.

And so ends this bizarre chapter in Brett Favre’s career — just as the career itself is coming to an end.