Answer:

untack

AnswerCrossword Clue
UNTACKRemove, as from a wall
UNTACKPrepare to remove old carpeting
UNTACKRemove from a bulletin board
UNTACKDisjoin.
UNTACKRemove from the bulletin board
UNTACKTake down, in a way
UNTACKRemove, as a notice
UNTACKRelease a bulletin?