Thank you, yes I think that is correct. From memory of how the leaves look and pictures online I think it is a Helmond Pillar type. I was pulling out a thorn bush from one of our beds and almost didn't notice it there, but I do have a vague memory of those leaves in that bed. I did save the main bush which is tall and slender as described here: http://www.naturehills.com/barberry-helmond-pillar
This bed had two nice shrubs with a thorn bush that grows like a weed in the middle and the barberry lost in the mess of the thorn bush. There was a Virginia creeper going up the thorn bush!
It sprouted some leaves after the summer heat wave and they do look like the Helmond Pillar type. They only grew down low within about the bottom 6" of the plant, the main stem is about 4' tall and it seems odd that nothing grew on it.