purchasing shares of the company is blatantly clear, his resolve is to get rid of shareholders while he makes money. Those shareholders that hold long through thick and thin,(wink... Frost basically told investors this on Cramer) get rewarded while the others slowly get purged by the master himself.
Stock buybacks turn companies into tontines. As a company/CEO buys back shares, its future earnings, dividends and assets concentrate in the hands of an ever shrinking shareholder base.