Complex sentence: After completing his second lift at 160kg he misteriously pulled out of his final lift, allowing other competetors a shot at the Gold medal, Whelan left himself chance to complete the 2008 AFL season with the MFC and cement his spot for the 2009 season.
Split into simpler sentences: After completing his second lift at 160kg he misteriously pulled out of his final lift, which allowed other competetors a shot at the Gold medal. By leaving himself out, he was able to complete the 2008 AFL season with the MFC and cement his spot for the 2009 season.