Yours (Alan) is the only one that 'looked' preg, but I had yet to see movement on as I told you at the time. She was pretty big though, bigger than a couple of the others that there was definite movement on. By that note, I could see yours being the last to pop, but the other 3 there was definite movement at import time.
As I've mentioned inother threads, It's very common for these Male MM to come in fully rolled at 7", that and these girls preg at these sizes, does lend credence to the theory of a smaller MM variety. With that, and moms size, I wouldnt be surprised with the pups being smaller than what we are used to seeing in our tanks.