In certain cases the CB may imparts a little spin to the OB. Very little if any.
randyg
You've never used English to change the angle of a bank shot? Can only be explained by transfer of spin from the cue ball.
To the OP's question:
The only way to get the English on the cue ball to "reverse" is to get the axis that the cue ball is spinning on to flip. If you watch and 3 cushion you have seen this done many times.
I posted this before I read all the way through. I thought someone would have mention this already.