Walking etiquette

Just wanted some opinions from you guys. I have a beagle/pug cross, we go down to some fields every morning on our walk. They're not official dog parks but they're known locally as such (literally every dog walker I've spoken to has recommended them!), we've only ever met two dogs there that were on lead and that was because they were still in recall training. It's a generally accepted rule that if your dog is off-lead, they're friendly, we've never had any problems and have made a lot of friends there. But this morning we saw a new dog, mine went over to say hello as usual but the other dog (off-lead) lunged and nearly made contact. Other dog's owner grabbed him and pulled him away, I rushed over and got mine on lead (she doesn't back down when she's being challenged) and the owner mumbled something along the lines of "mine will kill yours if you're not careful".

I was pretty shaken up. Well-aware that my dog needs more recall training (thought it was good but apparently not!) but I also think that dog should have been on a lead or muzzle. Just wondered what you guys think and if you have any tips for getting your dog to come back to you when they're in that kind of situation that they won't want to leave. Thanks!