I don't think it's worth rethreading. Just use as is and buy a cheap Harbor Freight pitman arm or tie rod remover.
They are threaded and less damaging than a pickle fork.
Also someone the other day mentioned using a taper-fit drill chuck removal wedge.
btw I just looked at the HF tool mentioned above and the first 4 reviewers all complained of it breaking. I guess you get what you pay for.