A group of us were looking at this a few weekends ago, and assumed what we had done was the correct problem, but having watched a video on peakbouldering, I'm now far less sure.
Does this climb solely the arete, or is it left hand on the arete and right more towards the main face? We initially tried just using the arete, but it felt desperate. Instead we resorted to dynoing left hand on the arete, right hand on a sort of jug in the middle of the face, and a right heel on, which was a pretty fun move. Unfortunately no video, and the man with a camera has decided to go to Cambodia for a while, so ropey descriptions are the best I can manage at present.