bungee terminal ends

It is time to replace a few bungee cords on my Yak's and paddle keepers are one of them.
 Is there a good trick or tip as to how to release the old cord and re-use the terminal end?
 Thanks for any help Folks, I need to get back on the water!

Post up a pic or two so we can see what you are working with. 

Slide collar off with pliers and use a little flat screwdriver to carefully pry out the barbed tabs.

The collar usually doesnt want to go back on quite as tight but ive reset them quite a few times.

Thanks Man! Worked like a charm.