I was in a situation like this not too long ago and took pictures of the grass uncut, snow not shoveled and damges that were to be fixed, messes outside, etc. I also documented everything everyday in a note pad. Once I had a decent amount of stuff talked to lawyer for legal advice and then I went to the rental management and showed them eveything I had on the situation and told them of my lawyer and right then and there they let me leave my lease, stay up to month free while I finished the moving process to the new place and I got my security deposit back!! It was cheaper for them to do it that way then fight with lawyers and court fees. maybe you should try to do that.
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it ain't over til it's over...