It seems that the Japanese central bankers want a stronger Yen, but without this being based on the expectation of a less expansionary monetary policy. 

Excuse me? Now, not only me, but a number of confused market participants are probably hoping for a clearer signal from the BoJ meeting on Friday as to where the BoJ actually stands now. This puts more focus on the BoJ decision. To be honest I hold out little hope though that I will be any wiser on Friday.