What I suspect
1) "Process that he's being made to go through" is probably referring to him still going through arbitration with Twitch
2) It is probably like most employer wrongful termination allegations in these situations: The employer (Twitch) is probably stating they had reasonable cause to terminate the contract under their contract with Doc, and Doc's side is probably arguing it was not reasonable and was in breach of the contract (ie, get out of paying him salary by creating some reason to terminate it so they can pay others potentially less)
The timing is suspect to be sure. When Twitch started to bleed big stars, Doc's signing was probably Twitch doing a panic signing - they didn't want to risk more top streamers abandoning the platform, so they backed up the Brinks truck. They signed a bunch of other larger streamers to contracts around that time as well. Once Mixer died, the biggest threat in terms of poaching was gone (Mixer was the closest approximation to Twitch, Facebook and Youtube streaming sort of served different markets). This made Doc's contract a potential albatross around their necks in regards to profitability and it also set a benchmark for what other top streamers could potentially demand, so cutting his giant contract and basically using that to fund multiple large contracts (I can almost guarantee Ninja and Shroud got less than what Doc got) makes sense.