Hunden told niko on messages before using it but after Astralis game, where he used, niko and hunden, told CadiaN and ¿stavn? in TS and niko said he was against using it, but the report didn't specify about the others, just that they couldn't believe at first but then niko insisted. Sadly, we don't have the TS to check.
I mean, how on earth someone can think they didn't know, when even Xyp9x knew and did a tweet about it?
After some months, Hunden used the bug again, while TeSeS helped him to get into it in Dust 2, although TeSeS thought they were just having fun lol.
ESIC said on the report that Hunden told some staff about the bug too but doesn't explain in detail how he do it more than in "casual conversations" while "joking".
About the punishment, if the coach cheated, the normal thing is to dump him, what's the point on keeping him on paycheck if he can't do the work why he's getting paid, he damaged the team and team reputation, plus according to team and staff, hunden was almost the worst guy on earth! if you don't kick him is because you think that he has proofs that the team knew and agreed on it.