No one ever said it would be a "simple fix". Don't make up comments to support your statements. Yes, they would likely have to shut down the ride for maybe a few days when they are taking the yeti out/down and then another few when putting him back in. In the extreme event that they had to keep the ride down during the entire "fix", the so be it. It needs to happen. Although no one believes this will happen while it is one of the major draws to the park.
Sorry, but Stacy or Bob in Food Services do not count as anyone that has access to an imagineer. The CMs are typically some of the last to find out anything.