Mathew,

Hayek never denied that he were influenced concerning spontaneous 
order but not by Polanyi. He has always claimed that his explanation 
of the social system continues a long tradition. Hayek refers to the 
original Spanish schoolmen as the founders of the theory of 
spontaneous order and he also recognize a broad contribution to 
Scottish philosophers Smith, Hume  with Smith's commonly known 
"invisible hand", here we have a spontaneous order which is the 
outcome of the actions of individuals. Whereas Hayek developed this 
idea by considering spontaneous order the outcome of evolutionary institutions.

Rustam Romaniuc