Well........
it seems really weird, like they want there to be crossed sts for some reason. Is there a pattern stitch that they're trying to follow?
In any case, if they'd put in a parenthesis or two, it might make more sense...
as in:
K2. Slip next 2 sts onto a cable needle and hold at back of work. K1 from left needle, then (Sl1, K1, psso from cable needle).
That's my take anyway...don't know if this helps or not...
Diane