Start by reading RCW 59.18.085. Your landlord can threaten you, but your JAG information is more accurate. WA provides protection for tenants, in that if there is some compelling reason why you cannot occupy the house (such as the County won't let you) then you behaved reasonably.
There is another statute on quitting the tenancy and being released from the lease, same title and chapter, but I don't have the section number handy.
They can't get you to pay rent for a tenancy when the County won't let you live there. They can't hold you to the lease. If they decide to sue you for unpaid rent, please don't hesitate to call if you want help with your defense.