Alright, Bob... here's what I see... take it for what it's worth. If you normally do/don't do this stuff but injuries are preventing you, then I guess you're good:
1) In you x-step/approach to your throw, you're leaning back before you plant and pull through. Don't. You should be upright or leaning a little towards your target.
2) When you start the pull, start with the hip rotation, not the arm pull. Begin hip rotation and the arm will pull automatically. This will allow you to get further along in your pull at a slower speed and make it possible for you to explode later in the pull (as in closer to the right pec and beyond).
3) You are rotating your shoulders around so quickly that the disc isn't coming all the way across. You're losing all your snap. You need to find a way to bring the disc into the crook of your arm (allowing your wrist to collapse in (wind up) and then unroll out like a whip. If the shoulder rotates too fast, then the disc is coming out before you get that movement.
4) You're also not powering through with your hips, more like pulling through with your arm and the hips come along for the ride. Best way I can explain this is when you power through with the hips first, the follow through feels like your forward momentum stops and then your legs/rest of your body catch up vs your entire body flowing through and past your hit. It looks the same but feels different.
5) I don't know how necessary it is, but I was coached to bring the disc across my chest a little higher than you are (around ribcage area). Bring it through around the nipples and chin. That will also make it harder to get the nose up (but not impossible sadly).
6) Finish better. Your stroke is pretty much the same speed all the way through. You want to explode at the hit & finish. I think of it like a wave crashing. As you pull through you are a wave building height, just before the hit, you begin crashing down. Rapid and powerful right at the end.
Hope it helps. Let me know if you have any questions.
EDIT: Also, you could move your thumb closer to the edge as well, vs inside the flight plate.