This quote from Forex.com
It is reported that the intervention may have exceeded 100 billion yen and was done unilaterally, however the exact numbers have not been released. We would expect to see further intervention as past Japan FX interventions have occurred over periods of time. The previous period of intervention saw the BOJ sell roughly 20.4 trillion yen in 2003 followed by about 14.8 trillion in the first quarter of 2004. Japanese officials stated that they would resume FX intervention during the NY hours if needed so be on the lookout for further near term yen weakness.
100 Billion yen is nothing, bear in mind that a Yen is approximatley a penny. Now it varies, but the simple fact of the matter is you divide the Yen by 100 and get dollars.
Wow---so the Japanese "eased" by 1B USD equivalent. What is that? about 2 hours of interest payment on the national debt? Just saying, this is a joke, the big moves are a game.
In the past years 2003, they eased by over 2000 times more.
This game is after all, for all the money in the world, and those that control the news, control it to vested interests.