Next time, just start a new thread.

In most cases, 4 year old info is kinda risky. In this case, it's fine. A small engine like that will vibrate a bit. If the shaft were bent, you would notice it. In general, there is not enough mass on the prop or the piston to bend the shaft from a prop-strike.

When it comes to larger, especially gas engines, there is a risk of damage from a mere prop-strike due to the mass of the piston(s) and the stifness of the prop, (especially carbon fiber).

On a small engine like that it is possible, but unlikely that a prop-strike could bend the CS. I would not be afraid to run it if it were imperceptibly bent, but if it is apparent, buy a new one and if you are adventurous, replace the necessary parts. My guess is that after you re-build one glow engine, you will just buy new ones from that day forward.