These guys totally ignore facts when they come out with this stuff. They just need something speculative and interesting to their listeners to talk about. So they just make this crap up. They talk to some people who may or may not know anything and they run with it.
Colorado isn't likely to jump to the PAC10 and Utah isn't going anywhere without BYU. The only way Utah gets into another conference is with BYU.
I could see a scenario where both go to the BCS but to different conferences. I don't think this is likely but it might at least be acceptable to the people who make the decisions, if it is acceptable to both BYU and Utah admin. Which it probably would not be.