Complex sentence: Between 2003 and 2004 Massow was Director of another financial adviser firm, this time a tied agent of the Zurich Advice Network (previously Allied Dunbar), but that too ended in acrimony after Zurich decided to stop insuring the gay clients in which the firm specialised.
Split into simpler sentences: Between 2003 and 2004 Massow was Director of another financial adviser firm, this time a tied agent of the Zurich Advice Network (previously Allied Dunbar). However the arrangement was short-lived and ironically ended after dispute between Massow and Zurich over Zurich's approach to insuring the gay clients in which the firm specialised.