sorry this doesnt soyund like seuchin to me. our seiuchin steps out into the horse stance. this sounds more like nahanchi kata were the feet step in and the heels move out and you drop your body weight. i always imagine hitting somene in the stomach to help bring their head down. this works well for small people against bigger people. since i am naturally a big guy i still train to hit the body but i will vary it from time to time hope that helps