well, I'm embarrassed to say I got this wrong. I thought it was one more ploy to try to set up perhaps another referendum to support an exit. It appears that everything Syriza has done was to avoid getting kicked out--at all costs. I think if they'd known from the beginning that this was Germany's evil little plan, they would've been better served by not running for office at all and further eroding the credibility of an insurgent Left.
At this point, if Tsipras cares at all about the long run future of both Greece and leftist politics, he probably should resign.
I do think they tried to find a way out...and were using the last few months to do so. But it just couldn't be found.
Ths is heartbreaking, it really is. Greece is pretty much finished as a sovereign nation state now.
Edit: I decided I wanted to add that this fight wasn't for nothing, though. Little Greece managed to completely rip of the mask of Europe's true power source for the first time sine the formation of the EU. Virtually every ordinary citizen now understands who really runs their lives and how much ill they mean to do them. Germany was dealt a fairly severe blow to its own reputation, as well.