A 35-year-old female patient presents to your clinic with a 3-week history of low back pain and stiffness. The patient reports that the pain started after participating in a local marathon and has progressively worsened. She has trouble bending her torso to the left and has noticed muscle tightness on the right side of her low back. Physical examination reveals tenderness over the right paraspinal muscles at the L3 vertebral level. You diagnose the patient with lumbar somatic dysfunction and decide to use the High-Velocity Low-Amplitude (HVLA) technique for treatment. During the treatment, the HVLA force was applied to L3 with the patient’s lumbar spine flexed, rotated left, and sidebent left. The treatment is successful, and the patient experiences a significant reduction in pain and stiffness. Based on the patient’s response to HVLA treatment and the specific treatment technique applied, which of the following was the most likely lumbar somatic dysfunction diagnosis that was addressed during the treatment session?