I believe PM's involvement was primarily the boat crash and the upcoming criminal trial and liability, but if the rumors of drugs, money laundering, etc. maybe PM somehow got into that side of things. IDK
^^rsbm
I don't doubt that AM previously pulled favors to make offenses by PM go away but to my knowledge, PM had no other official actions against him other than the criminal and civil actions related to the boat crash.
I'm not aware of any rumblings that the grand jury was investigating PM for the rumors OP cites -- even after depositions for the pending civil and criminal trials.
(May 2019, PM pleaded not guilty to the criminal charges, and no trial date had yet been set).
Unlike MM, I think AM was being honest with himself that there'd be no rabbit pulled out of a hat to save PM from the boat crash charges that caused the death of a young, beautiful, and popular local girl
young. He knew that PM went too far this time and jurors would not be kind and/or forgiving here.
As to liability, we know that a civil judgment is only as good as the paper it's written on.
In other words, the court granting a $10M Wrongful Death Award to the plaintiffs is not the equivalent of collecting a $10M award -- think OJ Simpson. Especially given the Millions $$$$$ in growing claims against AM.
At the time of PM's murder (i.e., before the AM house of cards crumbled), IMO, AM recognized the reality of not being able to publically fight a wrongful death claim/award without severely impacting his standing in the community. Taking PM out of the picture would not make the claim or liability go away but could probably mitigate the damages.
Sadly, I think in his own mind, AM actually believed he was doing PM a favor by ending his life. MOO
Since the wife and son of a prominent South Carolina legal family were murdered in June 2021, the case has taken shocking twists and turns.
people.com
ETA:
Mallory Beach's mother has since amended the wrongful death claim a couple of times -- both eliminating and adding defendants, and even though some of the latest claims will likely be dismissed, the damage and stain would already have been done. MOO