there is a big risk at this levels to see the BOJ getting involve! When they do, we could see a 4-6 yen artificial correction that are going to wipe out all positions with tight stop-loss orders, making the cross to go north 1-2 more yen. This artificial correction will draw more sellers making the appreciation of Yen much stronger and quicker.
It is wise decision! I am short on both JPY & GBPJPY since last week and most probable I will add more position if they will break some key levels. Although in this slaughter house there are no levels!