I have always known this as a cheap record, and have to admit filed under "Sweet Way Of Living"
Like you I love the quirky stories / alternate takes etc behind some of the records we love.
Someone must have had a change of mind regarding this side, subtle differences but must have been Important at the time.
John Anderson found records from Various Sources including the Label Owner. With this record, high numbers appear to exist of each version.
(4 Copies in a Soul Pack from Soul Bowl in the 70's) - 100 for £3 - Those were the days.
However,
It begs the Question "Why the Change of Mix?"