While I doubt all 3 are given the green light to move, I wouldn't be shocked either. But as I said in another thread, St. Louis is actually serious about building a stadium and the NFL frowns on teams leaving markets that are actively working to meet needs. The problem there is the owner doesn't even hide the fact he wants them in Los Angeles.
San Diego made some hail mary type attempt at a proposal and Oakland isn't doing anything. My guess is the Chargers and Raiders are as good as gone and the Rams stay put. Which is funny because personally I'd like to see the Chargers and Raiders stay and the Rams to go back to LA. Even though it's been 22 years, "St. Louis Rams" still doesn't sound right to me.
If the Rams do go I'm wondering if the NFL will try to work out some Cleveland type agreement since they have a real stadium plan in place. Maybe the NFL sort of promises them a future expansion team. Then again the NFL wants a team in London, which I still don't understand how that's going to work.