I think OgNasty should have written a full disclosure and should do so in the future. I agree with the reached solution.
The best thing to do now is for both him and owlcatz to remove the feedback left on each other's profile.
But to be completely fair it seems OgNasty hasn't been online since you removed your negative and re-added it.
So what about you remove it again and give him some time to come back online and realize that happened? When/if he removes it then of course I'll remove my counter too as it is only that.
The best thing to do now is for both him and owlcatz to remove the feedback left on each other's profile.
Edit - Never mind, since you won't remove the neg, back it goes, too bad you are too thick headed to even deal with.... Idiot... 
I agree the negative OgNasty left on your profile (which represents "this user is a scammer", or at least "this user is shady/untrustworthy", not "I don't agree with him") is undeserved. I even added a counter feedback.But to be completely fair it seems OgNasty hasn't been online since you removed your negative and re-added it.
So what about you remove it again and give him some time to come back online and realize that happened? When/if he removes it then of course I'll remove my counter too as it is only that.