Ambassador to China: Hiw Has John MacCallum Managed to Earn a Living in Public Life For So Long?

What deal did Ambassador McCallum cut for himself with the Chinese government (or what does the Chinese  government have on him?) in order to do and say these things at a press conference where the national media was not invited?

http://nationalpost.com/opinion/andrew-coyne-mccallum-has-put-canada-in-an-impossible-situation-with-china