(1) The commissioner and all deputies, agents, and employees of the bureau shall keep secret all facts and information obtained in the course of their duties under this act, except if the person is required under law to report upon, take official action, or testify in any proceedings regarding the affairs of a savings bank. This subsection applies to all former commissioners, deputies, agents, and employees of the bureau.

  (2) This section does not apply to, and does not prohibit the furnishing of information or documents to, depository institution regulatory agencies, and is not applicable to disclosures made in the public interest by the commissioner, at his or her discretion.