In 2017, the appeal court ruled that the minister had acted outside his legal powers when he instructed the Director of Land to give the staff the leases.
The Attorney General then applied for a judicial review of the case.
Since then, two of the 13 staff have filed statements to distance themselves from the leases.
Mr Kalsakau has also admitted he erred in his decision.
Justice Andrée Wiltens ruled that all 13 land leases be cancelled and removed from the Department of Land's records.