"Transfer further billions of euroes to Greece" is precisely what the troika wanted to do, in exchange for draconian austerity measures like those of the last few years, which caused a 25% drop in GDP and a rise of the debt/GDP ratio from 105% to 175% (http://www.tradingeconomics.com/greece/government-debt-to-gd...).

The IMF themselves have said that Greek debt is unsustainable and a significant haircut is needed (although their head Lagarde ignores their analysts). Keeping with the dysfunctional austerity plans would only make the debt ball, and the eventual inevitable default, larger and larger. So even from a purely egoistic point of view, you should support the OXI.