When the entry of a summary judgment will not dispose of all the issues in the case, the court may, as the justice of the case shall require, either (1) allow the motion and postpone the entry of judgment thereon; (2) allow the motion and enter judgment thereon; or (3) allow the motion, enter judgment thereon, and stay the enforcement pending the determination of the remaining issues in the case. If a party resisting the entry of a summary judgment relies upon an affirmative demand against the moving party for an amount less than the latter’s demand, judgment for the difference may be entered and enforced.