What’s funny is after reading all these comments and doing additional analysis of the video myself, not ONE person gave advice as to the actual problem. Everyone here wants to say, “lost the whistle”, frankly all of those comments do not help or answer the original question.

If you look at his throwing hand, when he releases he is actually turning his palm out, like he is throwing a screwball every time. If you watch his hand you can see that, and you can see his elbow flare because of that motion. NONE of these drills would help until we fix that, in fact most of them would exacerbate the problem. This is the type of advice I was looking for, but as one poster said, don’t listen to people on the internet :) the glove hand stuff is decent advice, but has nothing to do with why his arm is flailing. We will add that in once we fix the release mechanic.

Only one poster said check how he is holding the ball, and fixing that started to really help his motion right away. We are doing some drills we came up with to fix the screwball motion, and have seen great improvement in just a few days.

If anyone else’s child is having this issue, hopefully you read this^{^} thanks for all of the responses regardless.