Sounds like your husband is stirring the drama pot in order to deflect attention from his unacceptable behavior. Look over there, my sister said blah blah about you because you blah blah my mom. Whatever you do, don't look over here and see what I'm doing- lying stealing, drinking, drugging.
Since this tactic has been successful he will keep using it until it no longer works.
What do YOU want to do for TG?