Finally got the cpu removed. It wasn't as straight forward as I thought but it eventually popped off, leaving most of the solder balls intact.
There are no obvious traces from the USB host pins but neither are there from the USB client pins. There are a ton of buried (blind) vias on this board. The PCB technology is just amazing. You're probably looking at an 8 layer circuit board!
In any case, if any of you have X-ray eyes, gaze upon the photo below and tell us what each pin is connected to....
