It could be that you're still losing the same amount of fat. Do you have a way to measure body fat like skinfold calipers? Disappointing fluctuations in scale weight could be attributed to a number of things. The superdrol and creatine can be making you hold more water weight as well as an increased amount of glycogen storage. This could account for some of the decreased rate of progress. If things stay that way, though, it's probably time to decrease calories.
I'm not sure about how long it would take to remove excess water due to creatine, but I'm guessing it wouldn't be more than a few days or a week. I also don't think you'd be likely to gain much mass with superdrol on a calorie restricted diet. Strength could be definitely gained, but not that much size, especially if you're pulsing.