I may have missed this info..so..

I am assuming the snake was all alone in the tub so there is no doubt that HE produced that pile?

If so, that leads to my next question...

You said the snake is a proven breeder, did you put him with female and observe the coupling (his tail under hers and hemis inserted), or did someone simply tell you that the snake is a proven breeder?

Have you probed the snake yourself?