By Alek Arend The Pac-12 was blindsided by USC and UCLA’s decision to leave the conference for the Big Ten, and the conference is now responding how you’d expect. Just moments ago, the “Conference of Champions” released a statement to address the decisions by USC and UCLA. The Pac-12 Board of Directors has authorized the conference to explore expansion options. What does that mean, exactly? It means programs like Boise State, Fresno State, San Diego State, Nevada or UNLV might soon be getting a call. And don’t count out a couple of Big 12 programs. “The Pac-12 Board of Directors met this morni…