Alternate Ending for Shadow? [Spoilers]

The first time I ever played and beat FF6, the game had only been out a couple of weeks, and I was using a Nintendo Power walkthrough for help, and I can almost SWEAR that I saw 6 or 7 of Shadow's dream sequences, and in the last one, he was revealed to actually be a female. Then when I beat the game I got a totally different ending for Shadow!
But that cartridge I was using was borrowed. I didn't get my own copy of FF6 until three years later! And I have never been able to get all the dream sequences to occur with my copy.
I swear I'm not crazy, but I can't find anyone who knows what the hell I'm talking about. Help!

Shadow is a man. His name is Clyde Arrowny. He only has five dreams in the game, not six or seven. He only has one ending.