%untwine%

v. t. [ 1st pref. un- + twine. ] To untwist; to separate, as that which is twined or twisted; to disentangle; to untie. [ 1913 Webster ]

It requires a long and powerful counter sympathy in a nation to untwine the ties of custom which bind a people to the established and the old. Sir W. Hamilton. [ 1913 Webster ]