There's a large amount of unverified evidence that would be damning.
RIOT can't make a solid decision, since they nor anybody outside the two involved have the full story. They banned him the first time because he claimed to have the whole video, but didn't. (this is off his tweet)
The ban is over, the evidence still exists, but there's no conclusion. It's a difficult decision to make.
I think it's best to stay aware of it, but not rehash the same old, overdone discussions that inevitably devolve into sexism and other unsavory stuff.
Discord