its been said that the hunt is about the hunt, not the kill. in other words, we bother for the sake of bothering. like Cowboy said, its a passion. and all may not be lost. you can always take the backing off the rest of the way and clean up the back, then glue it or another one back on. ive never done this, but i dont see why it wont work.
remember, half the fun in bowmaking, is the problem solving. im sorry for your setback, and i understand your frustration. but ive been there before, and i almost quit all together. but i took a step back, a deep breath, and came to this site for help. after that little break, i came back to it, and the solution was staring me in the face. since then my bows have been getting better and better. just dont give up man!
Phil