He won't liquidate the company so long as it protects him from prosecution or civil suits.
the letter clearly states that Ken should not involve himself with the shareholders at all. Until that ends, or the MSD gives him further instructions of what he can do
The company gives him no more protection be it trading or liquidated. As CEO he may have no personal liability for company losses. As a scammer he has full personal liability for all losses.
He is silent now because that is his final move of this scam. He has actually been instructed by the MSD to inform and comply with shareholders contacts and requests for reimbursement - the MSD state that shareholders should
contact the company via the forum. So he is not under any order to remain silent.