Now we're getting somewhere! Unfortunately it seems that all of the photo experts I had hoped would be helping us out here are either out of town or suffering medical problems, but I'll list a few of my observations. Basically, I believe that the shadow problem is a result of your light placement. You have two problems going on here:
1. Two shadows. One is coming off of the right leg, and the other is coming off of the left and spreading into the background. Typically, you should have two primary lights, only one of which (at most) should be pointed at the figure and creating a shadow. One light (the brightest one) should be pointed at the backdrop. The other light can either also be pointed at the backdrop, or pointed directly at the figure.
2. One shadow is too large and bleeding into the background, necessitating photo editing to paint it out. If you have a light pointing directly at the figure, make sure it isn't stronger than the backdrop light, and make sure that if it is strong enough to be creating a strong shadow, that you move it high enough such that the shadow it creates pools around the figure's feet.
Other than these lighting issues, this is a near-perfect raw photo!