That's my understanding of the physical modification - probably replacing one low pass filter with another.
The difference between this modification and the one done by Lifepixel and others is the dust removing function remains in place. The Lifepixel removal of the AA filter also removes the dust removal function. The design of the D800 sensor assembly may have been redesigned or modified to make this practical.
There are some images where you cannot remove moire. You have to accept that as a consequence of eliminating the AA filter.
My D200 had the AA filter removed during conversion to IR. I've had one image over three years that had moire. The moire was clearly visible in a rook of one of the historic buildings at Bodie. I minimized it with sharpening but could not come up with an acceptable image for printing and selling.