I agree. Its one thing Eglnyt for you to promote the YES vote ( and don't say that you aren't, because that !!!!! won't wash), quite another for you to lecture valid ATCOs on what they can and can't do.
FACT...if you are valid on a core sector at Swanwick, you are NOT required to be valid on another sector. Therefore, there is no problem with you saying you don't want to do that particular sector any more.
FACT...things like Working Groups are "extra-curricular" activities and do NOT form part of your terms and conditions as an ATCO. Therefore, again, no problem giving them up.