I came across a few epidendrums which have leaf arrangements simular to this plant, but none quiite fit in size, colour, shape or arrangement. E.g. vesicatum, medusae, nocturnum & friends ...
It is of course possible this is a hybrid. I don't think it is Trichoglottis or Trichoglottis x Epidendrum though: a quick check showed that there are no registered Trichoglottis x Epidendrum (or vice versa).