Grave abuse of discretion connotes judgment exercised in a capricious and whimsical manner that is tantamount to lack of jurisdiction. To be considered ‘grave,’ discretion must be exercised in a despotic manner by reason of passion or personal hostility, and must be so patent and gross as to amount to an evasion of positive duty or to a virtual refusal to perform the duty enjoined by or to act at all in contemplation of law. – Briones vs. CA