Re decertification, There's this

http://www.alac.icann.org/framework.htm

... IV. Procedures for Board review of ALAC certification decisions:
ALAC decisions to certify or de-certify an At-Large Structure are subject to review according to procedures to be established by the Board. The ALAC proposes that review procedures be established, as proposed below:
     1.      A request for review of an ALAC decision to certify or de-certify an ALS would be required to be filed within 60 days after the ALAC posts notice of the action on its web site. Requests for review would be submitted by email to xxxxxx. No particular form is required, but requesting parties would include at least the following information:
    2.      name, address, and contact information for the requesting party (including postal and email addresses);
3.      the specific action for which review is sought;
4.      the date of the action;
5.      the facts supporting the request for review;
    6.      the grounds on which the Board should conduct its review; and
   7.      any documents the requesting party wishes to submit in support of its request.
The ICANN Board will appoint three of its Directors to consider such requests and conduct the reviews. The Board appointed review group will notify the ALAC of the request for review. The review group may request additional information from all parties involved in the review, as well as other sources. Requests for review and the Board review group's activities and decisions will be made public on the ICANN website. The review group may, in its discretion, grant a party's request to keep certain information confidential. For any matters that the review group determines not to disclose, the review group's decision will describe in general terms the nature of the information and the reason for nondisclosure.
The review group will endeavor to complete its work and issue its final decision within 30 days of the filing of the request; its decision will be made public on the ICANN web site.
To protect against abuse of the review process, a request for review may be dismissed by the review group where it is frivolous, non-substantive, or otherwise abusive....