The area where I had 3 tree stands placed was hit by tornado. The area follows the bottom along a creek. My question is: because there has been so much torn up by the tornado leaving behind tangles of trees and brush down the paths for the wildlife have been blocked. Should I attempt to open the area with a chainsaw somewhat so the deer can use the area they like to use so they don't have to leave the security of the creek and walk in open fields? Or let them establish their own paths?
I agree with everyone as well.... use a tractor with a blade and move some of the downed brush and small tress so that you make trails for the deer to use. They'll find them. Once you do this, though, get out and stay out for as long as you can. So if you're wanting to set trail cams up along these new trails, do so right after you cut the trail. That way there is no pressure on the herd and they'll be that much more likely to use the new trail you made.
Storm Damage 
Linear Mode
