Someone mentioned that the 2nd affair was known about by the board for a long time, and this is pretty common in boards. They don't really care, they just keep it in their pocket until they need the ammo to fire someone. It sounds right to me, affairs are very hard to keep secret for someone that public, and then this news dropped right after the first one.
As bad as cheating is morally, we don't really know how his wife feels or if they had some open relationship type arrangement, and it's not really material to his running the company because it's been doing very well during all of that. I don't think it makes much sense to fire someone over this, it's more like a power struggle with other parties vying for control.
> As bad as cheating is morally, we don't really know how his wife feels or if they had some open relationship type arrangement, [...]
If that's the case and she backs him up on this, then it's sordid but not cheating and _that_ part of the scandal can be overlooked, but espionage is a different matter.
It's not that boards don't care about the affairs, they prefer to keep it in their back pocket when a takeover is planned.