A 6-month-old Indian infant presents with persistent jaundice, hepatosplenomegaly, and a hemoglobin of 7.2 g/dL. Peripheral blood smear shows polychromasia and occasional schistocytes but NO spherocytes. Osmotic fragility test is normal. The enzyme marked **C** in the glycolysis pathway diagram is found to be deficient on enzyme assay. Which of the following best explains the mechanism of hemolysis in this patient?