I think the grower probably was referring to its dormant period. Catasetum/Cycnoches/Clowesia are all slightly different – and I don't remember exactly how – but generally, you let it dry out to a significant degree after it loses its leaves, and keep it either bone dry or water only very occasionally (depending on the genus/species) until it puts out new growth in the spring.
I don't have much experience with them, myself. Hopefully somebody else here can help a little more . . ?