Shoddy pole barn build. Start over or live with it?

[jack stand]

Look on the bright side,
11" difference diagonally is only 5 1/2" of correction on 2 posts.
I'd want to fix it. A little squirt of a good polymer caulk like OSI "quad" from the underside will take care of your roof metal "misses" when you're putting it back together. A wider purlin would allow you to re use the same holes. (Unless this is a all steel kit)

 

[70Beee]

If it were me, I would correct the structure before putting on the building skin. About 20 years ago I bought the house next door to get rid of the neighbors from hell. Tore the house down but kept a small pole barn for equipment storage. I ended up reskining the pole barn with screw fasteners replacing the original nails that were randomly placed by the prior owner without snapping a line. The building is much better than before but still not what I would have liked. Even the concrete was removed and a new floor poured. The old floor was 2” on one side and almost 6” on the other side. The house I tore down is another story. Some people are either incompetent or just don’t want to take the time to get it done right.

 

[472scout]

You at least have to make it structurally safe . What's under the poles to keep them from settling into the sand? Usually concrete is poured or cookies placed before the poles are installed.