And now, it looks like Byrne has finally checked out completely: on Wednesday after hours, he filed a Form 4 showing that he had sold his entire ~$90 million stake in the company into the stock's recent squeeze as lending desks struggled to figure out how to handle the company's recently proposed "digital dividend".

His Form 4 showed that he sold about 4.8 million shares over the course of the past three trading sessions. His remaining 87,000 shares were given as a gift to an undisclosed recipient. 

Then, in a blog post on his site Deep Capture, Byrne blamed the SEC, who he called "the Deep State's pets", according to MarketWatch.