Yep ... It just sounds like a YO to me. When you K2tog, you must compensate for the lost st. In most of the patterns that I've read, the comp is via a "YO".
Now I see you have a decrease at the psso too. So maybe what they really mean is to "[color=blue]YO twice[/color]", which would compensate for the two decreased sts.
"yfwd twice" ... what a strange way to say "YO". :?
Someone else jump in here if I'm wrong...