Actually the leak originated in Spiegel I think. Here is the relevant document. It demands that Greece give absolute priority to debt service, ideally under a constitutional amendment, even if a tranche in the programme is missed (which means "shut down hospitals and schools, if you have to, the Hedge Funds are more important"). Also it demands "Transfer of national budgetary sovereignty", believe it or not. This beyond the supposed troika demands of a 16% cut across the board in private sector wages, dismantling most labor laws, firing half of public employees and a serious reduction in the minimum wage, and a ton of new taxes...
This is unrealistic and a bargaining bluff. In the unlikely case that they are idiots enough to mean it, even if somehow everyone accepts this passively (which I seriously doubt, accepting these demands is awfully close to the definition of treason), than Greece in a few months will be a failed state. I for one will stop paying taxes all together. Not evade, refuse, until sovereignty is restored (that is if I still have an income). But, barring a coup or an invasion, this is not politically feasible. The Greek government has said that this is a "non-paper", there's nothing to comment on...

The road of excess leads to the palace of wisdom - William Blake