I think it's pretty obvious what happened. Gorton gave ARI an offer and informed them that Stepan would be off the table if Lindberg was selected by Vegas. There would be no more negotiations, it was a take it or leave it offer. Tippet has lost a lot of vets and recently Hanzal. Doan was very pissed and decided to bolt. Tippet isn't at all comfortable hanging out the future of the organization to dry without any support whatsoever, and there are no other centers available.
Hence he wanted Chayka to take Gortons offer. Chayka is an idiot on par with people at the trading section of hfboards who think he can build a team with only draft picks and just don't realize how important it is to provide these kids with a platform to develop on. Any kind of reasonable environment. So he refused to take Gortons offer, besides he believed the expert clowns thinking Vegas would take a second rate 27 y/o goalie like Raanta over a really good looking young center like Oscar Lindberg (seriously, how could anyone believe that? I was 100% sure Vegas was taking Lindberg when he was exposed, any other decision would have been mindboggling). So Chayka told Tippet, take my word for it you are getting Stepan we can still get a better offer from Gorton. The rest is history, Vegas took Lindberg and Gorton told Chayka that Stepan isn't getting moved now and Tippet told Chayka to go **** himself.