Another thought- assuming the two Aster leaks were from the same source, it would have to be someone who was in contact with him while he was in gay baby jail. The one of him flirting with Twisty where she said she wanted to cosplay could have been sent by him to someone else who subsequently leaked it. Meanwhile the one of him shitting on Twisty's apology would have to have been someone he was in contact with that far out... it's possible he was still in the main Niji discord at that time, but that seems a bit unlikely.
It's of course also possible the leaks are from Aster himself but I doubt that, the guy seems content to chill with his fleshtuber streams for six fucking hours a day, I doubt he'd be spending any time on shit like this.