the imperative conditions that create a double-bind are that a) two people are involved and b) there is a bond between these two people that cannot be broken.  that is, the situation is such that the person in the double-bind has temporarily surrendered his ego autonomy.  of course, once the jump to a new context of living takes place-an event called satori- the job of the master is accomplished, and he lovingly releases the double-bind.
p. 240 goswami