Well, it looks like Butter cup wants to bully/pressure you into making a decision right here and now about meeting or going to court. That just rubs me the wrong way and I can see what he's trying to do. Fishing for information about the mortgage. You know what? Don't give him any info about the mortgage, i.e., let him think that this is going to happen on 12/13. He's just really out there and apparently needs money desperately.
I like Wonka's response and I would use it. It's time to smack that darn ball back on his side of the court. Keep it business like and I'm going to warn you...he knows what buttons to push and he's going to be pushing them. Don't give him a lot of info because he'll turn around and use it against you.
He's desperate and when they are desperate, they will do whatever they have to in order to get what they want. Do not allow him to corner you and emotionally and verbally abuse you. You still hold the key to something he wants and until he starts acting like a human being and can speak to you in a kinder and respectful tone, I wouldn't give him much of anything in the way of info.
What a total @ss.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.