Todd, Your string hand direction along you face is much better and like some other said after your 2nd video posting, you are holding much better. That is you have slowed down your release -- this is GOOD!
In your first video just posted, you mention that you are overdoing the elbow rotation. YES! It is from still having too much upper arm and anterior deltoid (back of the shoulder) involvement. See how your string hand ends up straight up in the air above your shoulder? If you can get transferred into your rhomboids and at that point take you shoulder out of the system (relax the shoulder and hold with your scapula pulling toward you spine) the motion of your string hand should be straight back along your jaw and stop either on the back of your neck or on the top of your shoulder.
In the second video, from the back. Watch how when you get to full draw, your string arm elbow stops moving. It should not stop but continue to pull although the movement is very small. This happens as you transfer the power to your rhomboids and off your shoulder. Also note how your shoulder blade is sticking out. This is as it should be. On release the shoulder blade will snap down toward you spine and in this video it does. The problem is that as you watch your shoulder to too adds to the effect which is causing your string hand to pop up into space.
Actually the very first shot in the back view is quite good but the rest show that flying hand.
In the "in front of the bow" view, your string hook looks very good with no torque on the string that I can see. On release your hand disappears behind your head and that looks good but from this angle I can't tell if your hand is up in the air or on your shoulder.
In any case, you have made great strides in the last couple days and you are far closer than you may think right now. Too bad we live so far apart since I think one face to face session would have you right where you want to be.
In the mean time and next time you go to shoot try this:
When you get to anchor, consciously see if you can feel the weight of the bow getting braced on your bones from the bow hand to the bow shoulder to the string arm shoulder. If done correctly it will almost feel like you get a weight let off. Like what you get on a compound bow but maybe not as drastic. If you can feel that, then just relax your string fingers and let the string slip away. If you have really achieved bone on bone support and gotten your shoulder relaxed, your hand will only move straight back and stop on your neck or top of the shoulder as the shoulder blade only has about a half inch to travel. Do not make a conscious effort to move your string elbow back, it should happen automatically.
If you watch my "release" video again (if you can stand it) watch the string arm elbow closely and you will see it continue to move toward my back in a horizontal direction. After the release see where my string hand ends up or stops and compare it to your videos. If you haven't, you may also want to watch the video about shooting a Hill bow using the BEST system. That will give another set of views. One of the clips there is directly from my back and you can compare shoulder movement to yours.
Todd as I say you really are VERY close. When trying new things it can be very frustrating right up to the eureeka moment.