If you never go back to SC there is not much they can do with the citation to collect $155 or $470. If you want you can write a letter to the court explaining what happened and where you live. Enclose the $155 and ask the court to accept it as full payment.
The response given is not intended to create, nor does it create an ongoing duty to respond to questions. The response does not form an attorney-client relationship, nor is it intended to be anything other than the educated opinion of the author. It should not be relied upon as legal advice. The response given is based upon the limited facts provided by the person asking the question. To the extent additional or different facts exist, the response might possibly change. Attorney is licensed to practice law only in the State of California. Responses are based solely on California law unless stated otherwise.
Contact a local attorney that could help you with this. use this link - http://www.scbar.org/public_services/find_a_lawyer
There are no special provisions in SC law for out of state defendants. So, please consult with an attorney.