Cocaine is more expensive than trimspa, but you'll get the results you want if you get yourself a nice expensive habit.
Then stop with the treadmill. If you eat less than you did, but still don't exercise, you'll still lose weight. It'll take longer since you're not burning the calories as quickly, but at least you'll shrink and you won't gain muscle mass.
Walking, jogging, running, whatever, really beefs up the muscles in your legs, back and abs. You're probably not going to turn into Chyna by running, but you'll develop the muscles there, and initially that'll put a couple pounds on teh scale.
My advice - throw the friggin' scale away. Eat what you know is good for you. Do the exercises you know are good for you, and screw the numbers.
Honestly, what good is it to know you weigh 100 pounds other than to be able to say, "I weigh a hundred pounds"?
When I was in the best condition of my life, running, pumping iron, and looking like a pro-rassler, I was shocked and horrified when I jumped on the scale and saw what my real weight was.