BK actually warned you of this just a few months ago. Remember what BK said last year in a quarterly update with employees when asked about using SSL as layoff criteria:
"I know from my email people feel like they got caught or surprised, but this is the way a meritocracy works. Expect that in the future we'll probably do similar types of things."
While last time is a surprise and meant to be private, this time is public and no surprise.