hiya. just read your whole thing here. it's seriously long. i kid.
might i recommend -- for PCOS help -- the bikram sequence? it seems to help with PCOS and also endometriosis. something about cleansing and helping with hormones. anyway, lots of n=1 in my experience of it.
that being said, where are those rod(s) in your back? and if you do go to learn the bikram sequence, i recommend you ask if the person who teaches has done any other kind of yoga or other kind of teacher training. because bikram's actual teacher training teaches you jack except for the sequence and bollywood movies and that bikram is a bit of a egomaniac. but, if the person has studied OTHER styles of yoga, particularly if they know how to handle folks with rods in their backs, then you should be set.
you know, if you wanted.