John, I've had two different one this year that did something like you say. One wrapped in a paper towel in a baggie formed roots from one end to another. It looked like a hairy worm with some of the roots 3" long. The cutting was a large one, about 3/4" diameter, and was really old and gnarly. I could not make out the top from the bottom, which usually is easy. Since I didn't know which way was up I planted it horizontal in a plastic dish 12" long by 3" wide that had a clear lid to it. Something that a store bought hot dog might come in, if you can imagine. The roots grew to fill the container both above and below the soil. The ones above slowly dried up but they continued to come up. Finally after 6 weeks or so, it shot out a bud. It now has a branch about 2" long with 2 leaves. I have room for it to grow a little more, then I'll have to pot it up.
Second case almost like the first. It grew roots from top to bottom, but this time I knew which was the top. After I let the root grow way beyond what I should have, hoping it would throw a bud, I put it in a cup. I buried all of it except the top node. It grew roots to fill the cup but not one bud. Then one evening I was showing it to the wife declaring that I didn't think it would make it because it wasn't growing any buds and was using up all its stored energy growing roots. As I turned it slowly, about half way up the cup I saw something pale that wasn't a root. It was a bud that had grew to the edge of the cup. With a pair of scissors, I cut a slot from the top to just below the bud about 1" wide. The bud grew right on out and is doing well.
You just never can tell, especially with older wood. If I get a chance I'll get picture of them to post.
"gene"