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Bad news. The divorce decree does not impact your contract with the the landlord. You are still on the hook.
Your only recourse, in the event that you paid it to mitigate damage to your CRs, would be to sue her for payment for basically failing to obey the order of the court.
So, no, they don't have to remove, and they don't have to observe the court's order. They were not a party to your divorce--the judge can only order parties to do things, not companies, even if they have an interest in the order.