Corruption in the 2018 Winter Olympics in South Korea?

South Korean snowboarder Lee Sang-Ho recorded one of the closest victories of the 2018 Winter Olympics, out Slovenia's Zan Kosir by .01 in the semifnals of the parallel giant slalom event.
But should the result have been the other way around? NBC's angles of the finish line appeared to show both Kosir's board and hand crossing the line both well ahead of Lee's board and hand. (The winner is the first racer who crosses the line with any part of his body.)
Even Kosir thought he had won, raising his arms in celebration after crossing the line. He also loudly protested after watching a replay alongside Lee.

But no change was made. Lee advanced to the final, where he lost to Nevin Galmarini of Switzerland. Kosir salvaged a medal by winning the bronze medal race.

It's possible that the angle shown on television was deceiving since it wasn't straight on. But what do you thi