(2) Attempt and Conspiracy Offenses Outside this Chapter. Whenever "attempt" or "conspiracy" is made an offense outside this Chapter, it shall mean attempt or conspiracy, as the case may be, as defined in this Chapter.
(3) Renunciation Defense.
(b) Solicitation and Conspiracy. In a prosecution under section 1003 or 1004 it is an affirmative defense that, under circumstances manifesting a voluntary and complete renunciation of his criminal intent, the defendant prevented the commission of the crime solicited or of the crime or crimes contemplated by the conspiracy, as the case may be.
(c) "Voluntary and Complete" Defined. A renunciation is not "voluntary and complete" within the meaning of this section if it is motivated in whole or in part by (i) a belief that a circumstance exists which increases the probability of detection or apprehension of the defendant or another participant in the criminal operation, or which makes more difficult the consummation of the crime, or (ii) a decision to postpone the criminal conduct until another time or to substitute another victim or another but similar objective.