I think you have a hard one to beat here.........
Your dog has
already been attacked by a Malamute, so you're not going to fool him into thinking that ignoring a reactive dog or re-focusing on yourself, or training will stop him from being worried of another attack.
The deed is done, he knows that dogs threats can be and
are real now.
If you were never to meet this aggressive, lunging Husky, you may very well re-integrate his thoughts on other dogs not being a threat.........but nothing will work whilst he is constantly meeting this dog, his only option is to stand up for himself, wouldn't you do the same, fight or flight? He doesn't wish to be attacked again.
Your only job now is to keep him away from this dog, if you are to have any hope of helping him to not react anymore, before he becomes fear aggressive, well.........I guess he already is.......
When I was training my brothers GSD's, some dogs would happily have attacked them, during adolescence. I used an umbrella to spread in front of them, when such dogs came close, the dogs were never once attacked or sewn a seed of fear, once adults they used their own body language at such dogs, and they are never approached in such a way now, but it is so important to not allow a dog to attack your own.
If your walks absolutely cannot avoid this dog (but I would try really hard to do that) then I guess you could also try the umbrella trick to avoid eye and body contact between them, and then continue to do as Jo advised above with continued training to help with other large dogs he approaches.
Good luck..... hope you can sort this out, some people just don't care do they.