I've seen a video (IIRC) where in mastering they just put two (linear-phase EQs, again IIRC) on the stereo track and assigned just the L and R to each, i.e., they acted only on one side or the other. And it was for just tiny bits to try and, in effect, move where something was in the stereo field by matching cuts on one side with boosts on another.
Not knowing what your intention is, I can't, myself, imagine you'd want to be messing with more than a few bands with something like that (whether a single, pannable EQ or two independent ones). If it's that messed up send it back for remix.