My 3 year old pit bull mix was the same way with dogs as Jeter seems to be. He had this thing where he would get within sight of a dog and try and stare the other dog down; posture stiff, tail straight up, hackles raised. If the other dog did anything other than stay calm or submit, my dog would lose it: lunging, snarling, eyes gone bloodshot, foaming at the mouth. At that time the only way to calm him down would be to pull him away from the situation (very difficult) or haul him up by the leash until he passed out (also very difficult and doesn't really give the owners of the other dog a good impression!).
I started keeping him away from all dogs. I would walk him at odd hours of the night and avoid houses where I knew dogs were tied out or behind fences. He got worse. Now it didn't even matter whether the other dog showed any signs of excitement or aggression. Because the behavior was so ingrained and self-reinforced, it just became automatic to him.
The last straw was when he flipped out on an extremely mellow, friendly, elderly lab--after we had already crossed the street during the walk. I also had recently been promoted to the dog trainer position at the store that I work at, and it makes the job much more fun if you have a demo dog.
What I did was to find out what his threshold for reacting to other dogs was. The point where I could break his focus on another dog, before he lost control. At first this was a great deal away... maybe 100 feet? I started walking him on a Gentle Leader, which I know I may get some flak for, but the prong collar was only amping up his aggression, and I'm not strong enough to walk him on a flat collar, especially if he reacts and starts to pull. With the GL, I was able to control his head so he would not be able to look at the other dog. I taught the "watch me" command at home, so I used this to maintain his focus. When we would get within that specific range of another dog, I would give him the highest value treats I had at a VERY fast rate. He's very food motivated, so that helped. Basically, I was using counter-conditioning on him to change his reaction.
We started seeking dogs out on our walks. Within a couple of weeks we could get within 10 feet of a dog on a tie out or behind a fence.
The hardest part was taking him to work. I worked with another trainer that has a calm, neutral dog. We had the dogs meet by making wide circles around each other, slowly getting closer, while I stopped frequently to regain my dog's attention. At one point, he lost control, and she had me spray him in the mouth with bitter apple spray, which actually calmed him down VERY quickly =P Again, constant rapid reinforcement with high value treats got the dogs within sniffing distance. After a stiff greeting, they were fine.
I've continued to do this with my dog over the past month or so. He comes to work with me, so he's constantly surrounded by dogs. Last weekend he participated in class with two high-strung, barking beagles, a Chihuahua that hates everything, and a rat terrier who was a little intimidated by my big boy... he walked side by side with all of them, without getting fixated.
I'm sorry for the novel, but I hope this post helps you out and anyone else that has a dog-reactive dog.