The reason I don't think it was solely to do with Mixer negotiations is due to that would be a terrible business decision from Amazon/Twitch as Doc was, and I think it could be argued still is in some ways, THE face of Twitch and Amazon/Twitch are a lot of things but they know good business. Everyone in negotiations massages the numbers to get the best possible deal for their client, that's their job after all. So the collapse of Mixer would simply of meant Twitch had a stronger position to make a better business deal for themselves. But to suddenly dump Doc, give zero reasons, and for an absolute wall of silence to fall over the reason for years now seems to suggest to me that some high up clown at Twitch made it personal and I hope we find out when the case begins.