You may tick someone off by saying he or she is chattering like a monkey. That would not have racistic connotations.
However, if Harbhajan has called Symonds a monkey, he is nothing but racist - especially after what happened in Mumbai and Nagpur when Aussies toured India.
You can pretend all you want, talk about cultural differences, communication gap, Aussies using more severe language; but talking about Symonds and the m-word is nothing but racist.