It means restart. It has never meant stop. Even the link you provide says:

> n. A metaphoric mechanism with which one can reset, restart, or rethink something.

That's what's confusing. The headline makes no sense because it's not about restarting.

The first example:

>It's time to hit Ctrl-Alt-Delete on the computerized Bowl Championship Series. Or should we now call it the Bowl Split-Championship Series?