May the Deserted Believer Remarry?

My question is this: In I Corinthians 7:15 the apostle Paul instructs us, "Yet if the unbelieving departeth, let him depart: the brother or the sister is not under bondage in such cases: But God hath called us in peace" (ASV). Do we understand this passage to teach that a believing spouse who is divorced by an unbelieving spouse, because of the Christian profession of the believing spouse, is no longer under marital obligation to the unbelieving spouse and is hence free to remarry? A second...