1.DO NOT SIGN THIS AFFIDAVIT AT ALL. Your in laws appear to be a very crooked prison and there is every likelihood that they would get the case withdrawn and would continue the torments as beofre.
2. Son unless and until your husband or your in laws also agree to withdraw their allegations or ensure your peaceful stay in the house do not withdraw the case at all.
3. If you think there is no scope for working out this marriage anymore then you may consider filing 498A case and then case of maintenance under PWDV Act.