Last December I sent a group of four backbulbs from Cattleya Laurie Lynn Westenberger blog reader Chiqui to play with. As you can see, they don't look like much, rootless, leafless and dried out. But still green.
I suggested taking it out of the rocks, rotating the whole thing so that the sprout is as far from the edge as possible and putting the rocks back. There is little risk of damage right now if a little care is taken during the process.
This plant should stay in rocks for quite awhile yet, until the next new growth starts. For now, water once a week and start feeding "weakly weekly" in a couple of months.
Good job, Chiqui!! It may take some time, but soon enough you will have flowers from this classic white hybrid.