I would not cull him for this one isolated incident. Every dog is going to have a bad day and hopefully that is all this was is a bad day. This may never happen again and he could be the best cd you will ever own? Only time in the woods will tell. I had a cd I would consider great get thrown 10 ft in the air and when he came back down he didn't go straight for the hog he circled around and got a run at him from the side and caught the ear. All dogs are different, but prior to this if you thought he was a good cd I would keep him. If this happens again then I would start looking for a new one.
for once I agree with leonriverboy. it was the dogs first time getting cut like that, and he made up for it with good effort in the end. keep him in the woods and don't even consider replacing him unless he does it again.
