I intentionally did not cover that. What I said was that it would be best for the wire to not bend it more. I don't mean to imply that re-forming the bend would be likely to damage the wire. Bending damage is cumulative, and you are probably a long way away from that. If there is not an inspection coming that would cause problems, I would leave it.
Now lets say that your inspector is looking hard for something to gig you on. The old trick for that is to leave something wrong that is easy to fix. I am not saying that would work with your inspector, but it does with some sadly. But anyway, let's say you want that bend smooth for whatever reason (even OCD) and it is accessible. In that case, you would compute the 5x and find something to use as a mandrel. That could be a small juice can, a big socket, a pipe segment, or whatnot. You would hold your mandrel on the inside corner, and would shape the outside with your fingers or blunt tool.
For fun, you could experiment with a scrap piece of cable. Bend and try to make a conductor fail. It will be hard to do.