I'd like to say it'll be just fine, but the cable stop is a little piece of lead and lead melts very easy. This means it could have got hot and adhered to the side of the case or crank, or bounced around in there and got small enough that the turbulence of compression finally moved it on through the engine. It also could have went through with the intake gases, or be stuck to the head or piston crown with the compression stroke of the piston. Do the low tech inspection, pull the head and look at the combustion chamber and top of the piston. Turn the engine over and look at the cylinder walls for signs of stress, scratches, gouges, nicks, etc.
Does it run good now? Or is knocking or making weird noises?