There’s nothing you can do about the hogs rolling each other up or even fighting. It’s just what hogs, especially males do. If you interfered, they might just have an even more ferocious fight when you weren’t around. Not a good idea. They need to be able to get on with their lives in their own hoggy fashion. The limp could have been caused by all sorts of other things as well. Mostly the hogs just roll up and their legs are tucked in, although sometimes they resist and use their legs to try to prevent being pushed along.
But if you are worried about the limp, it would be a good idea to contact your local hog rescue (you can get contact details from BHPS 01584 890801). You could at least have a chat with them and explain the injury more fully and take their advice.
