I had that happen once with a Champion Mustang. After shooting at a coon, the string'somehow' jumped out of the wheel and you wouldn't believe the loud report it made. I honestly thought it was the end of the bow. Got out of my stand and headed straight to the Pro Shop. Removed the wheel and the cam, checked the axle pins, they were both straight, checked the wheel &cam, limb pockets & bolts, restringed the bow and nervously when up to theindoor range. I couldn't believe, the bow was as good as new, nothing was damaged other than the arrow which I found a few days later, broken about 4" from the nock and a bit of my confidence, which later healed itself.Two month later I shot a good bull moose @ 43 yards with the same bow.