Mich. Comp. Laws § 500.6005

Sec. 6005. (1) A mutual company seeking to reorganize to a mutual holding company structure shall adopt, by the affirmative vote of not less than 2/3 of its board of directors, a plan of reorganization under this chapter. (2) At any time before approval of a plan of reorganization by eligible members, the mutual company, by the affirmative vote of not less than 2/3 of its board of directors, may amend or withdraw the plan.