Is discipline within the Union necessary?

I was recently having an argument, lets just call it a heated debate, with a 'friend' who had complained about the heavy handed, as he puts it, approach of the national union towards some of his 'ideas'. He was also concerned that he could never progress any concepts within the union structure as there were always obstacles put in his way. It is true that this individual has some good ideas but he also subscribes to a method (lets call it an ideology) that would not be supported by the majority of members on the ground. So it is important in my mind to be clear as to where the boundries are and I trully believe that once a decision is taken by National Conference we simply have to go out and implement that decision or policy. So a Regional Secretary stopping any attempts to avert this is, in my opinion, doing her job