I was able to stick the broken part back into the cable, bend some of the pins, re-attach, and hot glue it secure. Seems OK right now. I'm in a raid0 setup so I assume I'd notice fairly quickly if something bad was happening. I'll still call Hitachi and see if they'll RMA it or how much it'd be to fix. At least I can get my data off of it now. *whew*. My soldering skills are good enough for this but I don't know if leakage would occur or if extra solder/non-perfect gold connections would cause me problems.
I'll keep ya folks in the know.