Control periods for restricted ownership units shall be in accordance with N.J.A.C. 5:80-26.5, as may be amended and supplemented, and each restricted ownership unit shall remain subject to the requirements of this section for a period of at least 30 years, until the Township takes action to release the unit from such requirements; prior to such action, a restricted ownership unit must remain subject to the requirements of N.J.A.C. 5:80-26.1, as may be amended and supplemented.