Unlike Gates, who has been carefully crafting his dismount over the last two years, Carnegie decided to retire rather abruptly.

FORBES: Gates Among The Titans

Whitman had employed Santillan without legal documentation to work in the U.S. She found out, it seems (around the time of announcing her bid for governor), then fired her rather abruptly.

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The problem was, that had all taken place back when there was an "us" an entity I'd rather abruptly shattered when I called off the wedding a few weeks before it was supposed to take place.

WSJ: Julia Reed's French Non-Honeymoon | Traveler's Tale

McCaw did rather abruptly resign from the Clearwire Board at year end so one can conjecture that maybe he is facing a similar crisis now and that is why he left the Board when he did in the way that he did.

FORBES: Smoke Clears Around Clearwire