Within the meaning of this chapter, renunciation of criminal purpose is not voluntary if it is motivated, in whole or in part, by circumstances, not present or apparent at the inception of the actor's course of conduct, which increase the probability of detection or apprehension or which make more difficult the accomplishment of the criminal purpose. Renunciation is not complete if it is motivated by a decision to postpone the criminal conduct until a more advantageous time or to transfer the criminal effort to another but similar objective or victim. Renunciation is also not complete if mere abandonment is insufficient to accomplish avoidance of the offense in which case the defendant must have taken further and affirmative steps that prevented the commission thereof.
N.J.S. § 2C:5-1