How do you know it is just sprained and not broken, fractured, avulsed or constused? You should have it examined if your pain is continuing or worsening.
Once the correct diagnosis has been established a treatment plan can be created. IF it IS sprained: Chiropractic adjustments to the mis aligned ankle joints should be gently administered. Exercises, stretching, and physical therapy to support the treatment. Sprain injuries can take 6 weeks to 6 months to heal. Longer if you do not do the correct treatments. Most chiropractors are trained to help with this types of injuries.
If your question is more along the lines of: "Is it too late for a car insurance company to pay for the care at a chiropractic office?" Then my answer is: It depends.
Does an audible release improve the outcome of a chiropractic adjustment? Short answer is: no. See below research article.
Just because the joint pops does not mean the bone moved into place. Nor does it mean it moved out of place. However, if you experience pain when you are twisting and moving on your own... it probably did move out of place. Call a licensed chiropractor to examine you.
Pelvic tilts, Supermans, Bridges, and Planks are all exercises that are very low to minimal impact to your lower back without compromising and disc bulges, degeneration, or injuries that you may have sustained. There are more advanced exercises, but there are a few basic lower back, core building, supportive exercises that will go well with any type of chiropractic adjustment.