And the reason it must come out is what? I used to remove the fixed cup on every bike rehab. No more. Unless the bb is toast, there is no reason to remove the fixed cup. Assuming you have to remove it, the only time I have seen a bb with the two holes like you describe is on the adjustable cup.
Can you post some pictures? Also some pictures of the adjustable cup side as well?
I use the green Parks Tool pin spanner, but only on the adjustable cup. I can't see it working on the fixed cup. No way are you going to get enough leverage with a pin spanner (IMHO). It almost sounds like the PO put an adjustable cup on the wrong side.
http://www.parktool.com/products/det...=25&item=SPA-1