Here's how Ted is working the edging -- building in a means to pick up the border stitches. He says

"I've used this approach before, and I like it because when working with fine yarns, it can be difficult to consistently knit up in the same place along the edging, and this also minimizes bulk along the join where the stitches are knitted up. You carry a length of fine thread -- something slippery -- along the straight edge of the lace as you work. Each time you turn at the end of the row, your working yarn wraps around this thread. When you knit up the stitches for the border of the shawl, you insert a fine lace needle exactly alongside the thread, which puts a strand of the edging yarn on the needle, and simply knit that off to form the stitches for the border."