Yeah, I have seen video of hogs climbing out of fenced enclosures, usually, but not always, out of corners (which is why corners are bad), and jumping low panels such as the one demo'd by Texas A&M's extension service, or jumping part way and climbing the rest, but never jumping this high and certainly not by a wounded hog.
Sort of like with other livestock, many hogs simply won't jump, even when they have the capability.
I nailed a late night boar a couple weeks ago that was also an acrobat. I hit him through the front and broke both shoulders. He did a break dance in the sand for a while and I didn't think he would be going anywhere. First thing I knew he started scooting across the sand and took a good 4' jump in the air. Combined with some smaller jumps, he managed to make it about 20 yds into dense vegetation before he gave up the ghost.
I snared a large boar and my buddies neighbor killed it while checking fence lines. When I checked the snare the tree next to the snare was ripped to shreds from ground level to about 5 ft up I don't know exactly what happened but it would have been cool to see how he did that to that cedar.
US Army combat engineer retired