Sidespin by itself will not make a ball curve on Simonis. Here is a post I made to the other thread:It mostly just looks like heavy sidespin pulling the ball toward the pocket.
Here is an expanded video of the scratch: https://youtu.be/xBb6Bp496oQ
It looks to me like he has a lot of right side spin on the shot. It also looks like the measle ball is spinning on one of the measles towards the end. If the measle is slightly bulging, the ball can effectively be egg-shaped. A problem like this can only happen when there is enough side spin to keep the bulge on the cloth.