lol owned, when i read the title I assumed you broke your commode, anyway technically you shouldn't ride your fork anymore, but i know people who have bent back steel forks and never had a problem. I do wanna point out that that looks like a lugged fork in the pic, so i'd be more worried about it (i know someone who bent back a lugged fork and is fine too). Its basically just gambelling... with your life. Metal fatigue and all that ect ect. The importent thing is to inspect it for cracks or more likely crimps, if you see evidence of the bend/bend back thats prolly bad (but you prolly inspected it already w/e)
in the end if you can replace for 25 bucks i'd do it, just imagine what would happen in a catestrophic failure at speed and in traffic...
actually if it was mine i'd replace it even if it wasn't that cheep but w/e