http://repair4pda.org
Chock full of good info, pinouts and whatnot.
I guess I was thinking that if USB was accessible through the bottomside 720 connectors there might be a way to rig us usb slaving without needing the cradle, or following the connections to the inside of the 720 and mounting a usb port in place of the serial connecter.
btw, what switch are you referring to? n/m, I see it. I never realized it was there, lol
I've only synched my 720 once over the wire, then it's all over wifi.