UPDATE - - UPDATE - - UPDATE - - UPDATE - - UPDATE - - UPDATE - 

https://sites.google.com/site/mcasualsdazscripts4/mcjaddradialmorph

if you have trouble downloading from my google attachments, here's a direct link to the zip file

https://sites.google.com/site/mcasualsdazscripts4/mcjaddradialmorph/mcjAddRadialMorph.zip?attredirects=0&d=1

New in version 3

If your target object does have a morph named, for example "Stretch" and the current specified morph name is "Stretch"

then using the "Append To Morph" button will add the selected vertices movements to that existing morph

If your target object does have a morph named, for example "Stretch" and the current specified morph name is "Stretch"

then using the "Remove From Morph" button will remove the selected vertices from the existing morph