Thanks Weedhound and Sativa... I feel better. After some reading on Hermies, I guess I shouldn't have been so surprised. After all, this was bagseed and if it had seeds, it must have meant that IT was a hermie and hermies pass on their hermaphroditedness...
My next batch will be purebred Bubblegums... Until then, I will try to pick the male flowers from away from the female ones and preserve what I can while I vegg out the bubblegums.