"With respect to the lack of correlation between JPY-USD and other USD pairs?"
Yes - money flows into USD$ and DXY have been rather large. So looking for correlation as to where the money has come from. JPY is the main suspect.
New world order is; JP and US working together, against a cheap labour neighbour.
Outside of the DXY - RUB is the other suspect, hence rates going up to 9.5% today.
But everything is pointing to JPY/USD...