Am sure the stump, will explode with new growth in the spring, providing the cold doesn't kill it. Looks to be big enough that it will sprout from roots even is stump dies.
Excellent work, if the only goal was to shorten the tree, you also could have just topped it and forced it to branch in lower trunk. I guess one is as good as the other. Thanks for showing the re-attachment of the bucket around the tree, good to know.
Just goes to show that where there is a will there is a way...