Cool video! Wish my dogs would stay on a towel when they eat!
I had trouble with my dogs staying on a towel at first but RFD told me how to do it -- to just keep putting the food back on the towel when they drag it off. Vito (the Jack Russell) still occasionally drags it off the towel just a little ways to the rug and I have to redirect him but, for the most part, they have been staying on the towels. When I first started feeding them raw, they wanted to carry the meat to another room. Yikes! That's when I got the advice from RFD about the towels.
It would probably work better to put them on a large sheet because the towels tend to bunch up sometimes and they have trouble eating the meat without getting the towel in their mouths.