IIRC there is a 7 day period of unavailability when the delegation is ended (from a post I dimly recall reading not so long ago).
I'm quite pleased to be able to vote (at low %) while allowing my VP to recharge! I am very grateful to you for the confidence and assistance =)
When my own SP is adequate to provide the slider I intend to let you know that the delegation has served it's purpose, so that it can be withdrawn at your convenience.
Thanks!