Thanks for the link Grahame - Unmesh Dinda and his Piximperfect YouTube videos are usually some of the best free information on advanced Photoshop tricks and techniques available anywhere. This video was definitely an interesting watch.
The one thing I don't necessarily like about his videos is that he usually tells the watcher what can be done with the technique he is demonstrating but tends to not mention the limitations of the technique. The image he is working on is probably close to the limit of the technique and Jim's image looks to be outside of that bound.
He is also right about the Photoshop Shake Reduction Filter; it is slow (although in reality, not when compared to the time and effort of Unmesh's technique). The Topaz tool is absolutely glacially slow.
I suspect that if I had a very important image that needed some work and I was willing to dedicate hours of time rebuilding it, then I might be tempted to do this. For most images, the advice I will continue to give is that missed focus and camera / subject movement mean deleting the shot.
One of my photographic instructors was a former air force photographer. He mentioned an incident in his early career (likely in the 1960s) when he blew a shot on assignment where he was covering the arrival of a VIP (member of the Royal Family). The resultant image was not sharp as a result of camera movement and focus issues.
At the time, press cameras were Speed Graphics cameras and the smallest one took 2-1/4" x 3-1/4" sheet film. I remember him saying that he spent about 2 weeks in the darkroom, using the physical unsharp mask technique to build up the image(s) that he messed up. This is a little along the lines of what Unmesh was suggesting of building up the refined image a bit at a time using masks and layers.