Let's be real here Niji Is never gonna release any termination notice for Twisty, they Will just pretend she never existed like they were doing for months now.
They tried to do the same with Selen more than a year ago but there were two reasons as for why they couldn't get away with it:
1. During the months she was Missing the dragoons and the community were verry vocal about it. People asked for her almost Everyday.
2. The Legal Document sent by Selen's Lawyer, which got leak to the livers, whatever was on that Document triggered the management and the Livers so Bad that they terminated Selen out of spite and led to infamous NijiEn's Black Stream.
Now, Twisty does not have as Big and loyal of a following like Selen did, and all the Bad stuff she said has tainted the perception of her for a Lot of people, this means Niji Is gonna get away with just silent terminate her and just ignore her forever, Sadly this would be the end of all of this, Without statement or closure on the matter. As for Aster... Probably the same He would just be ignore and suspended for an indefinite period of time. And don't try to believe Twisty/Lulu Will try to expose Niji any Time in the Future, She has stated on her streams that she will simply ignore everything, rebrand herself, and move on.