There are a few misunderstandings in your post that I immediately detected. The first is that I think you may not understand what us Orthodox mean by 'Tradition'. 'Tradition' to us does not refer merely to particular ideas that people in the Church randomly had, but refers to the teachings of Jesus that were delivered down to us via His Apostles through a) the Bible, b) orally, and c) the Church Fathers--all of whom based their ideas and concepts off of the first two. Secondly, Jesus only opposed certain traditions from the Pharisees which did not have any basis in the Law, ie the 'traditions of men'. And in some cases, He did not oppose their 'traditions' at all, but only opposed the Pharisees themselves not because they were following some type of evil tradition, but because they were obeying the traditions with the wrong disposition. Instead of performing God's traditions to be a humble servant and learn, they were only performing them in a legalistic manner to make them feel self-righteous. In fact, in one instance, Jesus even told us to obey the Pharisees in what they teach us, but to not imitate them.