Yes, I appreciate you pointing that out. I was a little surprised to see the limb act as it did in the moment, but was pleased (at the time) with the outcome which put the limb well below me at release and swinging far enough to easily clear the maple. However, in taking a closer look per your criticism, it's clear that the guy running the ropes needs a talking to. This was not my job or my crew. I haven't worked much with these guys, but enough to know they lack a lot of technical knowledge (which they make up for in hard work). For example, the guy running the ropes is also the owner of the company. It's his chipper, chip truck and loader. He remineded me last Friday that he doesn't know how to tie a running bowline.
IN taking a close look at the video (which is the theme of this thread), it's clear that the groundie let the piece start running before the cut was finished. This caused the but to push back into the tree when the cut released, and is what hung the piece up. If he had held the rope until the cut was finished, the but would have dropped and the tips raised, and the piece would have swung away. Ultimately, it's the saw operators responsibility to communicate with the groundie to run or hold etc. So this one was on me. But not because of the cut.. because of the communication.
You can see the entire set up of a later limb in this video, at 36 minutes, that I made sure he knew to hold the piece and let it swing before running the rope.