Also...relative or not, what he did was a threat. Basically, "do as I say or you will be homeless." In Colorado, you as a tenant can legally withold rent until the mold issue is fixed after giving a written notice of the issue. If the laws are still the same.

I checked in with a family member on the other side That's a lawyer, he said the same thing. He does real estate law and other forms of property law, and said to check myself but that to his knowledge I'm in the clear