I did almost the same thing 2 years ago at about the same time...wearing teva's and rooting around for a piece of wood in the shop and pulled a piece of 2x4 out of a pile....yup the one 2x4 that was holding up a sheet of 4x8 plywood. I lost the nail and it took about a full year to grow back...gave me an excuse to lay n the pool and ask my family to bring me beers
I didn't do anything...just kept it clean and let it fall off at its own pace...and soaked it hydrogen peroxide from time to time.
PS..a sawstop might be pushing it...but maybe a guided CS?