Complex sentence: As a result, he cancelled all remaining shows that were scheduled for 2011 and also cancelled shows scheduled for Janurary and Feburary 2012 to allow himself the time necessary to recover from the surgery.
Split into simpler sentences: As a result, he cancelled all remaining shows that were scheduled for 2011. He also cancelled shows scheduled for Janurary and Feburary 2012 to allow himself the time necessary to recover from the surgery.