Complex sentence: Phillips expanded his career as a radio personality in Cincinnati where he established his call-in format and his trademark style of remixing prerecorded interviews for laughs which eventually got him fired, after he inserted a phony item into a newscast.
Split into simpler sentences: Phillips expanded his career as a radio personality in Cincinnati where he established his call-in format and his trademark style of remixing prerecorded interviews as a comedy piece. He was eventually fired after he inserted a phony item into a newscast.