disengage (
http://definr.com/disengage)
v 1: release from something that holds fast. connects, or
entangles; "I want to disengage myself from his
influence"; "disengage the gears" [syn:
withdraw]
[ant:
engage]
2: free or remove obstruction from [syn:
free] [ant:
obstruct]
3: become free; as of gears, for example [ant:
engage]