MCS Act - Resignation of Secretary and Treasurer together

Hi, I am the Secretary of the society and have recently submitted my resignation t the Chairman. The Treasurer also submitted his resignation with me as we both are not able to devote the required time due to our professional / academic commitments and extensive domestic travel. The Chairman is not accepting our resignation and is stating that there are certain audits under Section 83 and 89 underway and we both cannot leave the committee in between. The current strength of the Managing Committee is just 8 (7 General + 1 woman) as there are no other category candidates and no other person from society is ready to come onboard. So if we leave then the Registrar believe will take over the administration. What can we both do? Do we write to the Deputy Registrar about this? The Chairman is dictating and stating she will not let us go and will not accept our resignation as we can't leave the society committee in between. She states she will make sure we are also blamed for the wrong doings of Ex Management Committee under Section 73 (1AB) for which the audit are underway. Thanks!