Complex sentence: This was not acceptable to Ickx, who left the team halfway through the season to race the German GP at the Ring in a McLaren, scoring 3rd place behind the Tyrells of Stewart and Cevert.
Split into simpler sentences: This was not acceptable to Ickx, who left the team halfway through the season. Instead, he raced the German GP at the Nürburgring in a McLaren, and scored 3rd place behind the Tyrells of Stewart and Cevert.