I don't know if this will help you see it, but here's my take on it... You put your needle into the next stitch on the left needle, and wrap your yarn around the needle as if to make a knit stitch. Pull through the stitch, but DO NOT slide the stitch off the left needle. Wrap the yarn completely around your right needle again to accomplish the yarn over, and then I swing around and knit into the back of the stitch, and slide all three loops off the left needle... I just tried it and it seems to work..
Hope this helps you envision it...
Nancy