I'm having troubles understanding the big up and over step you're doing or where that was picked up from. ... Maybe Josh teaches it? ... I .. dont know.
This might help you a bit more with your weight transfer, but. ... Sidewinder would have to explain it better than me, but this is what's queing in my head.
And relax man. You're so bottled up and shruggy tight.
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Right here you've already collapsed the swing as you're trying to throw your hips and knee's to drive your upper body.
The 2 best things that OT has done is box drill and twirly bird.
Twirly bird allows you to feel the drive arm come in and out and in and out in a natural motion and as you drive that feeling up, you try and build the box with the shoulder and elbow as you feel the hand curl in and then fly out.
so, here in this photo your shoulder has collapsed. gotta not tighten the shoulder, but relax it down, but keep the elbow forwards.
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Swing plane is huge, and what is happening here is all your weight isn't getting transfered right, you dont have this really good shift to the front with the step thing your doing, which is why i think the video above will help you.
But you can see the blue arrow here showing your shoulder power trajectory as you basically try and muscle your arm into place because your shoulder is collapsed, so you jerk the scapula and it pulls the shoulder up and out of plane with the shot.
We wanna rotate and stay on plane without trying to yeet discs with just our arm, and the posture you're displaying here shows me you're arm compensating.
The arrows are not literal places that your body parts should be, but the elbow should be forward by this point and the shoulder shoudln't be directed to low earth orbit.
Get your weight shift cleaned up and get more relaxed. let the arm do its thing. Just dont let it collapse to the chest and you'll make huge improvements just from those 2 things.