Hi Kodiak, and welcome to the forum.
Glad your pup wasn't hurt, but too bad he had this bad experience!
What I would suggest is see if you can find someone with an older, calmer, confident dog to walk Kodiak with. The older dog can be a good example and make Kodiak feel safer on walks.
Another thing to do is to keep Kodiak's mind busy and engaged while walking him, so he does not have time to focus on being afraid. Take treats, toys, and plan short walks that are all fun, fun, fun!!! Play, play play! Make a fool of yourself in front of the neighbours.
At this point, I would be worried about him associating leash walks with fear and attacks, so I would try to not put him in a situation where those feelings are brought up. Maybe try taking him to a completely different area, where he can be in an enclosed, safe place off leash (let him drag a line so you can still grab him quick if need be). Take up the line a bit and walk around with him on the line, while getting him to chase you, etc . . . just make it fun for him.
I really think that he can overcome this, but you'll have to change up his routine and his expectations quite a bit.