Tom Cella from the Utah Rivals site UteZone.com has information that Utah is on their way to the Pac-10:
Sources are telling me that Utah informed the MWC of its intentions to leave the conference today. Working to confirm this.
If true it looks like the Mountain West will be the same league in 2011 as they swapped Boise State for Utah since all signs point toward Utah bolting West to join the Pac-10. Look for official news on this later today or tomorrow.