It's his actual job - to represent and follow the opinion of the people. It's called democracy. And if the opinion of the majority is wrong, then, in this case, so be it.

To be fair his mandate on election was to reduce the impact of austerity. He has pushed for that but now the choice is austerity cuts or exit the Euro, neither of which he has an elected mandate for. Many other leaders would make the decision regardless but he had put it to the Greek people because ultimately it will be them that have to live with the decision and he knows that most don't want to leave he EU. So now they have to decide what is more important EU membership or no more austerity cuts.

However in reality it is no decision because without EU membership there is no money anyway so austerity is happening to Greece one way or another.

> He can just say "See you all decided not me."

A large portion of the Greek people recognizes this for what it is: an extremely cowardly opt-out for Tsipras for taking responsibility