It is, as you say, quite simple. DTCC evidently told Megas that the stock would never trade again unless he covered the short. He now recognizes over a billion shares in the o/s. After the r/s is effective, Megas will ask DTCC to resume clearing. In connection with that, he'll cut them a cert. IF DTCC has no further objections, trading will resume.
Those shares will be distributed to the brokerages, and at that point everyone will have legitimate stock.
This has been explained here many, many times, but most shareholders choose not to believe it, despite the fact that DTCC's more than two year global freeze has made it absolutely clear that the authorities have no intention of allowing a short squeeze in this stock.