Complex sentence: However, he was acquitted of all charges by attorney James Sinclair who had most notably clashed with Detective Sipowicz, and this led to Rodriguez first being passed up for promotion and later deciding to retire from the force and take a lucrative private security job.
Split into simpler sentences: However, he was acquitted of all charges after a defense by attorney James Sinclair, who had most notably clashed in the past with Detective Sipowicz. Fraker's acquittal led to Rodriguez first being passed up for promotion and later deciding to retire from the force and take a lucrative private security job.