Does original sin still exist?

Original sin as the priests mean it does not exist. 

What does is the outcome of past experiences and tendencies, which show themselves in each successive earth life and those inclinations to wrong-doing, which were not carefully checked and struggled against in the preceding life will show in a marked degree in the following one and produce results, which are called sins and described by the priests on your plane as Adam's inheritance—or something like that.

—The Witness