I don't know why they put the parenthesis in, there's nothing you repeat there. Maybe it's just to set off the 2 different decreases. BTW, shouldn't the first one be 'yo, k2tog' the ssk so the YO is on the outside of both decreases?
Also, it would be a good idea to start your own thread for a question that doesn't pertain to the original one, besides, this one is more than 5 years old.
sue- knitting heretic