Mr Abe certainly seemed to break an old Japanese fashion and he had some intention to do so: He has much to deal with still stagnant Japan's economy, arrogant China's territorial policy, grumpy Korea's attitude, and he had to show he could solve these matters.
Mr Abe visited the Shrine which previous PMs hesitated to visit in order to overcome neighbors' blame.
However, Ms Kennedy then expressed her disappointment at it. Considering the background of her disappointment, I think it understandable that Mr Abe stated at Davos that something unexpected would bring something disastrous.
He may have wanted to push Mr Obama forward to China. At any rate, the Japan's last resort is, as usual, have Mr Obama do something with it.