Or the simpler explanation (Ockham's Razor):
Dr Pestell ended up realizing that Leronlimab would be ineffective for cancer. So he ended up protecting more patients from falling prey to the stock pump.
Who remembers the Irish Patient, the woman who was > guaranteed < to be cured by Leronlimab, according to various "experts" (a mix of illegal paid stock promoters and gullible followers) on various social networks? The chat was really strong, this was an absolute > guarantee < , a sure thing, there was zero doubt. As everytime with Cytodyn's pumpers.
Well, this was all wrong, as every time. She has died, Leronlimab did nothing for her. She could have tried another experimental treatment instead. She has lost precious time, and the ability to follow other clinical trials. Now she is dead, because she fell into the promotion trap.
My understanding is that it's the key trick around "safety". Dr Pestell ended up realizing it was ethically wrong to push more desperate patients toward Leronlimab. So he took the high road, delayed an inhuman trial, and was fired by the crooks for that.