I also think the info the board used to make that determination is not yet public

That certainly won't be the conclusion of the board as less surprising firing Jensen - stock-wise the best-performing CEO of this decade so far - affects the stock way more negatively than sex affairs even with spies made public. So there is more to it than the public will be let known.

Wouldn't this open him up to blackmail and espionage? The people he cheated with whether they exploited it or not had kompromat on him. Not only that but the new allegations show he has a pattern of acting a way that would let people get kompromat on him, not just a 1-time thing. So even though the cat's already out of the bag now, who knows if any demands were made or proprietary info leaked.

If the Huang has a secret relationship with a report then he's in a lot of trouble and the company is in some trouble. If the companies response to that relationship is to do nothing - now the company and Huang are both in a lot of trouble. Heck the problem with the first affair isn't the is she or is she not a spy - if Huang could convincingly argue that he didn't know then he's a victim - the problem is having a relationship with a customer, that's actually not much better then with a report.

Define “a lot of trouble”.