That concern is why I put pins in the magnetic base to hold blade. There is at least one hole in the tang that slides over the pin, and another pin up toward the tip that allows blade to rest against to prevent blade flying off. Now, with that said, I still stand to the back where if the blade did fly off, it wouldn't fly toward me.
With only .005" depth cut, and low RPM, there's not that much force on blade, but again - BE CAREFUL!!!
Ken H>