Sorry to hear about your fall. Like cougar mag, I also have a lone wolf climbing stand and this is my second season with it. I've been nothing but impressed with it and I also use it alot. I agree that in the late season the cams that hold the belt take a little force to open. But you surely wouldn't want it to pop open to easily. The newer ones have a small hole drilled in the lever portion of the cam and a loop of cord attached making it much easier to put your fingers in the loop and pull the cam to disengage it.
Dan