Maybe that's what they're doing, maybe not. I have a hard time seeing UW wanting to help Oregon - seems like they don't like each other.
So I have no idea why Washington did what they did. Maybe they just genuinely want a game Saturday and aren't sure the Utah/ASU game will get cancelled - so they're trying to get a backup plan and got butthurt when BYU said thanks but no thanks. Again - Washington or the PAC12 looking out for Washington/the PAC12 is understandable. But BYU doesn't have to look out for either of them.