Interesting....really. I just posted a pic of how I found it. With unfertilized Ovum. There was another 66% het but it looks different than normal as well. The color of the 2 head is how most of my 66% Het Limburgs look, but the sibling of the 2 headed is very very light, it did not have it's sac attached.

I had another clutch born last week, 3 66% hets, no Albinos this year, but one was born with a sac, the next day it was disconnected, looked great, moving, investigating, died the following day. Strange.

The odd thing, is that the female the 2 headed came from had 1 Albino and 3 hets last year, no slugs. Nothing changed this year at all, same tubs, temps etc. Strange.