A MANHATTAN resident may owe her former landlord almost $50,000 in back rent, after a divided appellate court yesterday reinstated a housing agency’s determination in a dispute over the laws governing rent stabilized apartments.

The ruling is another about-face in a long-running case that has been covered by the media both for its dramatic reversals – the tenant was at one point awarded a reduced rent and more than $50,000 in treble damages -and for its illustration of an overburdened city agency unable to dispatch cases quickly.