Unfortunately there is almost no chance you can recover from here. I got chat restricted like 25 games ago and I'm still honor locked. The system is pretty brutal honestly. No warnings at all, just directly to lose your rewards. Never seen a game like this that will do that at the drop of a hat. I really think they need to start issuing warnings before punishments so players can correct their behavior before getting punished, rather than punishing what people work all season for.
Seems pretty bone-headed, especially when Riot themselves, are publicly toxic quite frequently.