To go back to the original post (sorry I didn't catch this before) -
Stiltons are usually much taller - you generally want more height than width (sort of). Since it's pressed under its own weight, my thought is that the reason it has so many large cracks is because it was too short - not enough weight goin' on to get it to knit better.
Personally, though, I don't think it's a problem. You'll probably want to be very careful with the humidity, make sure the short flat form isn't allowing it to dry out too much - but hey, cracks in a blue cheese? More room for blue!
That's my story and I'm stickin' to it.