A similar position came up soon after in Game 3 of the 48th Kuksu Final on 20 December 2004. Yi Ch'ang-ho played it against Yu Ch'ang-hyeok and went on to win.
The nadare (avalanche) is probably the most famously diverse opening, so yet another novelty is no surprise. The GoGoD collection has 1,456 nadare games of which 686 show distinct lines.
The full game is available here.