At least your saddle was on tight. That is more than I can say for myself and a big Western saddle. My military saddle had a circingle and there was never a question about that saddle being loose. Luckily, I was never bucked out of the military saddle. Although my boots were out of the stirrups a couple of times. One of those times I had a sabre in my hand which I threw away as soon as I determined the situation was out of control. Once my horse calmed down I went back and picked it up.