(a) Prior to the Discharge of Priority Lien Obligations, if any Second Lien Secured Party, contrary to this Agreement, commences or participates in any action or proceeding against any Grantor or the Collateral, such Grantor, with the prior written consent of the Priority Lien Agent, may interpose as a defense or dilatory plea the making of this Agreement, and any Priority Lien Secured Party may intervene and interpose such defense or plea in its or their name or in the name of such Grantor.