In the event that my sysNAND may have a patched TWL_FIRM (This might be the case actually, I had to patch TWL on emuNAND and perhaps also sysNAND to get my ds flashcart to work porperly) my only solution would be to keep patching TWL with a vanilla .cia until the downgrade goes through correct? After going through the whole process of injecting sysNAND to emuNAND, double formatting, and updating to 10.7, it still fails. I'll keep trying until it goes through.
Thanks for your help so far, although I fear I may have screwed myself over here...