Dear Neil Sir, Just wanted to ask...do you mean to say that the Shubhada's plant is not Crepidium resupinatum? but Corymborkis versicolor? Or you are talking about your plant. Please do post a closeup picture of the flowers if possible.
Unfortunately, I dont know of any species which is called Corymborkis versicolor. Corymborkis belongs to subfamily Tropidioideae whereas the Malaxis group belongs to Epidendroideae. They are totally different. Secondly, Malaxis versicolor and Malaxis rheedii are two different plants according to my knowledge and IPNI and Kew. I may be wrong though. Regards Pankaj

