Check the section on POLICIES - RELATED PARTY TRANSACTIONS, INDEPENDENT DIRECTORS...
Upon further reading, it states that the majority of independent directors requirement is NOT necessary if the company can be classified as a Controlled Company. A controlled company is any company where majority ownership is controlled by a single person or group. So, if the share buyback continues, which is a complete waste of money, Fox might get controlling interest again and then be able to bypass the majority of directors be independent clause. I do not think that is in the best interests of the shareholders.
Of course, this is just my opinion, and based on my limited ability of reading and comprehending the listing requirements. There could be other exceptions to the listing requirements for the AMEX that I am not aware of.