 In June 2017, Castle began producing and co-hosting a Norwalk-centric video podcast called "The Maple City Minute" with fellow Norwalk City Council member Samantha Ludwig Wilhelm.He resigned from his position at the Norwalk Economic Development Corporation in September 2017, to re-focus his energies on the podcast and on the wider-reaching goal of overall community development.His wife, Julie Castle, announced her candidacy for Norwalk Board of Education in 2017, narrowly losing a six way race in November 2017.