Disclaimer: Nothing changed since the last chapter - J.K. Rowling still owns Harry Potter.
"Ladies and gentlemen," said George (or maybe Fred), "what does Goblet's magical contract say exactly? That Harry Potter must not compete in the Triwizard Tournament."
"And what is the exact condition in the Unheckable Vow, taken by our respected guests?" said Fred (or maybe George), "If Harry Potter does not participate in Triwizard Tournament, then blah-blah-blah."
"Therefore," said one of them (or maybe both), "the solution is obvious: Harry Potter should participate, but not compete."
Eight months later.
Excerpt from an article in the Daily Prophet:
"As our readers know, the success of Triwizard Tournament was predestined when Harry James Potter himself graciously accepted an offer to participate as the Chief Judge.
Yesterday the Tournament was concluded with thunderous applause from all the public when the Chief Judge handed over the trophy to the winner, Cedric Diggory.
But each champion said that much more valuable than any trophy was the personal gift he (or she) received from Harry Potter – a copy of his favorite book "Quidditch Through the Ages", personally autographed.
We have no doubts that this event will be remembered as Harry Potter Tournament for eternity and beyond.
And beyond the first beyond!
P.S.
No pants were wetted during the tournament (just kidding, dear readers)."
. . . . . THE END . . . . .
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Another possible solution would be just to rename the event; I chose what seems funnier.