That sounds a very smart abode the hogs have there! If the hog really was there all night, fingers crossed it might be a female with babies. You would normally expect a hog to come out during the night and go hunting for food. Having said that, My trail cam doesn’t seem to catch absolutely all the comings and goings. Sometimes I have actually seen things that are not picked up on the camera.
I think you are wise to err on the side of caution, just in case. Good luck.