Live and learn. Overtightened a bolt while working on the scooter belt. Now I can't get it off!

So it's probably going to the shop. Amazing what you can learn when you watch videos. For some reason I misplaced a part and though uh oh how the hell did I get that there? Probably thought it was a socket and set it aside. Watched a video and by accident and discovered where it goes. Funny how mechanics work. There's a Y-shaped tool you use on a scooter to hold the spinner in place while you tighten the bolt. Probably only use it for that, but when you need it you sure are glad you have it.