Thanks Dave. I only unplugged one front O2 sensor when I had the EGT bung installed so there is no way they would have been swapped.
When we (Bisi and myself) disconnected the F/IC, all trims went to zero and in open loop. Hooked the F/IC back in figuring we had eliminated one variable and the trims went in opposite directions like before.
So last night I populated the F/IC with the latest calibration AEM software and patch. Started the car this morning and both fuels systems read open with zero trims long and short. Didn't take long but they both went to closed loop. Long and short trims were nearly identical front to rear bank this time. The long trims were arouind -30 and the short -5. But at least both banks were reading negative and their numbers were almost identical. I feel I'm making a little progress. I've reset the ECU again and when I leave work tonight we'll see where it sits. Still waiting on a call from AEM.