According to Derek Webb’s tumblr page:
From Derek and Sandra, to our friends, colleagues and supporters:
We come to you today with heavy hearts to tell you that after thirteen years, our marriage is coming to an end. This has been a difficult and painful decision, one that has been arrived at through months of hard work and counsel. While we both acknowledge our own human sinfulness, Derek has taken full responsibility for the events which led to this decision. We are grateful for the support of our families and community, and we ask for your prayers and for your respecting our family’s privacy during this difficult time.