I would talk to the new neighbor about coordinating potty times until you can get his recall firmed up a bit more. Mine loved to go visit the fence to see the dogs next door (they had a fit, mine has never barked at them). However, because I have the chuck-it in hand usually when we're out stretching our legs, he focuses on that and not the dogs. Now, he almost never even notices them when we're outside, doesn't even twitch an ear when they bark at him (the dog is chained 24/7 close enough that he can get to the fence and there is a dog that is also loose...both pits). Rarely, (once a month or so) he might charge over there to check them out, but recalls easily as he would much rather play ball. Have you also tried having him potty on leash so you can correct/redirect if he gets wound up? It's good for dogs to be able to potty on leash.
Xan Varik von Fernheim (born 4/3/13)