There are many problems with what you stated. One problem with what you have written; the Orthodox Church and the Roman Catholic split in 1,000 AD. So who was wrong in their teachings "according to the Sacred Tradition of the Church??
Nothing. The insertion of the Filioque was not done properly, so the East had a good reason to complain; then the issues of church administration took over and the split solidified. There are several theological explanations of Filioque that are acceptable to both sides. It is not a theological dispute, although the Russians especially like to make it one, for reasons known to them.
Amusing that the Protestants in their ignorance of the Holy Scripture don't notice that the Eastern position is more scriptural and repeat the Latin creed.