Go back on your slow bulk (whatever that means), get on a proven, solid program for your goal(s) and start doing hard conditioning.
If you add muscle and your fat amount stays the same, you will get leaner.
Also, Peri work out nutrition. Look it up.
You also gave up 700 calories overnight. Body is reacting to the drastic change. Start at 15x body weight total calories, 1gr of protein per bodyweight, 20% of calories in fat and the rest is carbs. If you loose weight, don't change anything. If the weight stops for two weeks, go to 14x bw calories and the rest the same. And so on and so forth.