It's hard for me to believe that you would walk away from the negotiations at this point in time. Is it really that fucking difficult to sit down and work it out? If you don't like the idea being brought to the table by the other guy then fight against it. Don't just walk away from the negotiations entirely. That's about as childish as it gets.
Obama tried to pull one over Boehner and move the goal posts. Boehner being wise got up and walked out for a reason. Obama wanted 400billion more in extra taxes. This is what happens when you have a person with no executive experience in dealing with budgets and fiscal reform as your president.
No, that's not how negotiations work. You don't just walk out, especially when there's no time left and the stakes are so high.