The effects of soulforged corruption can be staved off with the Cleanse Soul Path exploration activity or cured with the purify soul path ritual.

Purify Soul PathRitual 2

Uncommon 
Source Impossible Magic pg. 101
Cast 1 day; Cost rare incense and offerings worth a total value of 10 gp × your level
Primary Check Religion (trained)

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You delve inward, spending extensive time contemplating the purity of your own soul and your past actions. If you aren’t truly penitent, the outcome is always a critical failure

Critical Success You reconcile your misdeeds with your soul path, removing your soulforged corruption, so the corruption flaw from your armament stops affecting you. Before your reconciliation is complete, you must perform a special quest or other task in accord with your soul path. If completed during downtime, this task should take no less than 1 week. For 1 month, you receive divine insight just before performing an act that would be anathema to your soul path.
Success As critical success, but you gain no special insight.
Failure You don't reconcile and must continue to meditate and redress your misdeeds. Any future purify soul path rituals for the same misdeeds cost half as much and gain a +4 circumstance bonus to the primary check.
Critical Failure As failure, except you do not gain a circumstance bonus to the primary check to future purify soul path rituals for the same misdeed.