Hi everyone, thanks for the feedback! Just a little clarification, I've talked extensively with both my mom and my aunt for the past few months about this....or I should say, they talk to me about it. I have been saying for a decade now that she needed to set him straight, tell him to grow the F up, and kick him out but she just says "he'll just sink". I think he needs to sink to be humbled.
She has honestly thought recently of just signing the house out of her name (she keeps herself one foot out the door anyway and has never had an attachment to the house and stayed intentionally behind on property taxes if she ever needed to run) and just abandoning the house and him as he has made it very clear of his refusal to leave.
I think you're all right, I live 3 hours (drive) away so it's not like I can just swing over if things hit the fan but I am also not afraid to be an enemy of him as I have been there before in the past. I have never had a very good relationship with him and at this point, I don't even like him as a person anymore. I wouldn't even extend putting a shed turned tiny house in my backyard anymore for him to live in (just a running *serious* joke - my mom has always said I'll have to take him when she's gone because he won't make it). I think it's best I just stay the fack out of it

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I appreciate tattle and everyone on it so much, thank you for listening to my Ted Talk.