Tries to start and back fires sending rotation opposite direction

It may be the key in the flywheel has sheared. Any issues earlier or hit anything with it? This could also be a stuck valve but lets start with checking the key

Yup I checked the key about 35 min ago and it was sheared. I like to never got the flywheel back off. But its off now and will get a new key tomorrow. Thanks

You are welcome anytime