Thank you, Carpe Diem and Naoki.
Carpe Diem, for a ''beginner'' that was a very sophisticated and thorough reply! Is the root stimulant the same as ''orchid food''? [see, these kind of questions really tell the ''beginners'' from the beginners!

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Naoki, it has left 4 or 5 roots probably. Whether they're healthy or not, I'm not really sure, but I thought that they still had 'flesh' in them and some 'stiffness' when I examined them. It is in its original mix, i.e. bark, as I was planning to repot it upon my return and once the flowers would fell off, but given the condition in which I found it I have been quite ambivalent about messing with. Plus, an assistant at a flower shop told me not to do anything until the flowers fell off 'cause I would cause more damage... Would you suggest that I cut off the spike/stem/stalk [don't really know what the right term is] that has the flowers on?
It is hard to know how much of my 'messing' with the orchid is helping the plant and how much is doing damage, so thank you both for your replies.