the fundamental problem of their negotiating position was that they didn't have an 'or else', it was 'agree to something more reasonable/sustainable/long-term, or we'll just run out of money, have no back up plan and end up accepting the 'deal' we rejected a week ago'.
they have - not just in order to negotiate, but for a serious option if they don't get a much more sustainable agreement soon (which they aren't going to get) - got to come up with a leaving-the-Euro plan, they need to get the work done on planning it and managing the transition (the what-is-everyone-going-to-use-for-currency? question), and they need to put together a hard currency fund to pay for the essentials - food, power, fuel etc.. when the new currency goes through its initial 'not worth the paper its written on' stage.
they did none of this, and were suprised when everyone else in the room knew that they'd have no option but to agree to whatever conditions the bail-out came with, and just sat them out while things got increasingly fraught at home.