I am away from my Blade at the moment but if I remember well, there was a DEBUG connector on the Ethernet board. If it is two pins (I think it is), it is probably an I2C interface. But this is not something you may easily work with unless you are in a lab with HW dev equipment.

EDIT: It's actually 3 pins, GND, Tx, Rx. It might just a well be a serial interface (console?). If you have any RS-232 port at hand, maybe you could attach a terminal, and get the settings from friedcat (or just try 8N1 at 2400, 9600 or 19200 bps? best guess...). At any rate, if I were you, I would (be pissed off but anyway) wait for an answer from him.