One of my pitchers has developed a bullet spin on her fastball. During warm-up throws she has a nice 1 to 7 spin. But when she drives off the rubber it's a bullet spin. I've attached a clip, the first half is just circle warm ups with a nice 1 to 7 stripe. The second half of the clip is her driving off the rubber and throwing with a bullet spin. I'm hoping someone can see where the problem lies. I suspect it's the release point.
[video]https://youtu.be/ptwQtPtv3yA[/video]
[video]https://youtu.be/ptwQtPtv3yA[/video]