johnpower. There is a Throwaway in Jive which has nothing to do with a Throwaway Oversway in the Standard Style which is a picture step.. They are as different as chalk and cheese.
In the Jive the lady instead of the Change of Places right left were she goes under the man's left arm. In the Fallaway she goes from the man's right to his left without going under.
Same timing . No turn. The man's left hand is kept low at about hip level.This can be followed by the normal Change of Places left to right.