Probably so but even though the law doesn't allow it as explained, OP had given notice of termination of tenancy, the property remaining was minimal. The landlord may have believed the OP to have moved out and started cleaning the apartment. Before getting too worked up I would talk with management first. It could be an explainable error.
I would expect the landlord to compensate OP for anything missing though. Maybe this can work to the OP's benefit. If the landlord wants the place now, maybe OP can get released from his February obligation.

