hi Argoneus the answer is simple get mon mothma (or emperor if your the empire) and drag just her (or him) to the planet in question and put him/her in the slot that says "remove corruption" and it will be removed for a fee.
Peace is a lie, there is only passion.
Through passion, I gain strength.
Through strength, I gain power.
Through power, I gain victory.
Through victory, my chains are broken.
The Force shall free me.