There is no 'coup'
Even if the Whales acquire the preferred series A, they still must carry out the terms of the letter agreement, which stipulate a Qualified Independent Board being seated, followed by the preferred being redeemed by the company.
17. Each Investor that acquires Preferred Stock in accordance with Section 13 agrees that such Investor shall vote such Preferred Stock in accordance with Sections 4, 5, 6, 7, 8, 9 and 10 and shall otherwise comply with provisions thereof as a holder of any shares of Preferred Stock. The Investors agree that the Company is an intended third-party beneficiary of this Section 17 with the right to enforce its terms directly against the Investors and their successors and permitted assigns, including without limitation, through specific enforcement as provided in Section 21 hereof.