What is the cause of action on which he filed and what remedy is he seeking? Is it breach of contract and he is seeking money damages or is it something else?
Do not beat yourself up about hope. We all do this. We don't hear anything and we think they miss us. No, they are scared little children who are not honest about anything and can't behave like civil adults.
If it is breach of contract you have some defenses. He made your performance next to impossible. You could argue that he breached first, that he created a hostile environment for you, that you had to cover by seeking shelter elsewhere. He is the one who upset the apple cart. Not you. You are nobody's victim. You are one of the strongest people on these boards. Do not cower in fear from the actions of a chicken. In a worst case scenario you could defend yourself and explain the hostile environment and why you had to leave.