It's possible it might be related to the women he cheated with, which might explain why his wife didn't seem to be upset in that IG post. If she already forgave him for that and now suddenly those women are "he used violence, speed, and momentum against us!!! giev monies", it could explain Twitch's fast reaction and why there isn't any criminal shit apparent - because the accusers don't have any substantial case, but the accusations are considered "evidence" enough.
The absolute silence on the subject makes me think there is a lot of legal shit going on in the background where both sides really don't want to comment on the details because it would be damning to both. Doc wouldn't want to drag that out in the open again (because it's damaging to the brand - even a slight accusation of rape/sexual assault is poison, even if disproved later) and Twitch would take heat because they already knew about this long ago, gave Doc a big contract, and now it's suddenly a much bigger deal and they cut ties.
Now Twitch has itself caught in a very bad position: If they restore Doc and details get out, that hurts Twitch's credibility more and calls into questions their other bans. If they don't restore him, then they risk possible litigation (which also makes Twitch look bad, depending on details). Doc is also in a sensitive position, because if it ends up being related to the person he cheated with and her accusations go public (even if false or only half-true), then it swirls him in the whole streaming/esports "metoo" shitstorm going on, which would be a fatal blow to his career.