Tips for neutralizing fixed dog around intact males

Hi all,

I have a ~1.5 neutered male who loves to play with dogs. He is very well mannered with other dogs when off leash and is never pushy or rude. I take him to a large dog park roughly once a week so he can play with other dogs. I typically go during off hours and always leave when it gets too busy.

I know a lot of people have experience with their neutered males not liking intact males, but I have yet to really find practical training solutions to help with this. I don't know anyone with an intact male that I could work with, so that is not really an option.

Recently, whenever there is a large intact male at the dog park (doesn't seem to be too phased by small intact males interestingly enough), he gets very in their face and barks / is very rude / will NOT leave them alone. I always grab him and leave to avoid any escalation.

For additional context, I adopted him at 6 months old and around ~8 months he developed quite a bit of leash reactivity towards other dogs. His recall is already quite good, but I'm working diligently to perfect it so that I can actively call him away from these situations, as I'm always a little hesitant to pull him away from another dog in case he becomes 'reactive' due to being held back.

I'm not looking for harsh criticism here either please. This dog has come with a lot of baggage and I'm doing everything I possibly can to work with him. I'm just looking for tips on how to help him (if possible) become more neutral when he encounters such situations.

Thanks.

TLDR: what are some tips to ACTUALLY neutralize neutered dog around intact males (if any)?