Complex sentence: The band went on hiatus in the fall of 2012, while Stephen has been touring consistently as a solo act, with members of the Sixers continue to join him on stage from time to time.
Split into simpler sentences: The band went on hiatus in the fall of 2012. While Stephen has consistently toured since then billed simply as "Stephen Kellogg", past members of the Sixers have joined him on stage from time to time.