You can do that, but it has problems. First, he spends a lot of sphere points moving backwards to get back to his circle (though you can negate that if you use spheres, I suppose), and second, the first circles of a characters grid are generally the worst. They are usually 1 and 2 stat nodes, versus the 4 stat nodes that are common in the later portions of most of the paths. It's certainly possible, it just doesn't have a lot of benefit to doing it that way.