i don't think it was a fluke. Coming back from 11-3 is a big deal and i think GMB's morale went down after that. I am not saying GMB is bad they are really good but 100T has the most LAN experience.
If you think that sheydos losing a 1v1 gun duel to fucking hiko who's waaay worse mechanically is not a fluke, idk man. 99% of the cases he never whiffs shots like that one, especially given how he deleted the rest of 100t beforehand in that round.