Any ousting will probably be for having an affair with a direct report. At many companies, having an 'inappropriate relationship with a customer' isn't a policy violation unless there's also evidence of undue influence, so it's more conditional and complicated. Whereas just the existence of an inappropriate relationship with a direct report is a serious violation.

From an HR and legal perspective, if Alice was a spy, Jensen was arguably the targeted 'victim' of a foreign intelligence operation. While it was certainly very dumb and negligent, it may not have been a policy violation or may only have been a violation of company policies like mishandling confidential information or not following IT security policies. Those aren't usually "Fire the CEO Now" things, while slamming the sheets with a direct report absolutely requires some kind of immediate action.

The real question is who wants Jensen gone? Because the first leak was clearly intentional and reportedly placed by 'senior White House sources', citing a confidential NSC report. Now the second leak of the inappropriate affair happens immediately after. This was a designed sequence. Both of the underlying events are several months old. Given the facts, I think the most likely source is 'China Trade/AI Hawks' in the White House (possibly the NSC). The reasoning being that Jensen has generally been trying to minimize restrictions on selling AI to China (which is, arguably, part of his job).