It’s good to hear you have at least one hog which has returned.
First cameras aren’t totally reliable at telling everything that’s happening. So it’s possible the hog is going places which may not have been captured on ‘film’. There is a delay between when movement is detected and the camera triggers, as well as a time gap between images. One way to know for sure whether a hog has been somewhere, is to use a footprint tunnel. https://www.hedgehogstreet.org/footprint-tunnels/
Whilst hogs do eat earthworms and to a lesser extent slugs, they normally eat mostly beetles and caterpillars. So the hog could still be getting some natural food in your garden. Making sure you don’t use any chemicals in the garden, encourages more wild food.
If it’s a young hog, it might not have ‘spread it’s wings’ yet, but may become more confident as time goes on. I would keep feeding and providing water and it will probably gradually explore further afield as time goes on.