Complex sentence: In 2008, Higbee issued a press release indicating that the band would be on hiatus indefinitely; since then, he has founded another band called the Chris Higbee Project, while Abbondanza has begun a solo career.
Split into simpler sentences: In 2008, Higbee issued a press release indicating that the band would be on hiatus indefinitely. Higbee then founded another band called the Chris Higbee Project, while Abbondanza began a solo career.