You may have installed your $8 ring incorrectly?

Tell us more about whose ring and what engine are we talking about. Was it your S61K?

Most two strokes have pinned rings.

If you insert the sleeve and twist it, you have just destroyed a ring in a two stroke.

Your ring got caught in a port for the above reason and jerked the top ring land off.

It most likely destroyed the cylinder sleeve also? Look at the front or rear Schnurle ports and see if the top or bottom edge has a burr on it?