Wow! Thanks for the great responses guys. I sort of had a feeling that my yeasties had only been sleeping and I woke them up by back-sweetening; just needed it confirmed. I guess I'll be ordering some Campden tablets and trying to correct this little SNAFU. Thanks again to everyone, and I...
Actually, it is my first ever batch of homebrew, period. Also, I will admit right up front that (being my first ever foray into the hobby), I have purchased no specialized equipment beyond an auto siphon for racking. No hydrometers. No special yeasts. Nothing.
I used this recipe...