Thanks for all your replies. I feel much better after reading them. I literally had difficulty sleeping last night worrying about what I had done. My main concern was that I had halted the flowering process and essentially ruined the budding. In addition to your posts, I read elsewhere stories of people leaving their plants in the care of roommates who left the lights on for several days with no obvious ill effects. I'm beginning to think that the hermaphrodite formation may be linked to other stresses as well, and seems to be a problem with plants that have such dense canopies that some lowers flower receive insufficient light. I will be watching them carefully to see if anything odd develops.