Right but if the true issue was with a major and unambiguously bad transgression by Sam and Sam alone (e.g., there was a major leak of data and he lied about it, etc), why would they go after his ally as well? It makes the whole thing look more political rather than a principled “we had no choice“ reaction to a wrongdoing.
I think he's just saying that Brockman leaving sort of rules out scandalous revelations about Altman being the cause. Think about it. For Brockman to voluntarily align himself on the side of the man before scandalous revelations about him hit the news cycle would seem absurd and unnecessarily destroy his reputation also. Before news of Brockman leaving, I was near certain it had to be upcoming scandalous revelations about Altman.
It is not at all uncommon for people to staunchly defend their friends, even after they have done terrible things. I don't think this rules out anything.