Make sure that you closely examine the crank arm for cracks or other distortions before you proceed. Use a bright light an a magnifying glass. Aluminum can develop small fractures that are not easily apparent until they let go suddenly. Having been rudely introduced to the pavement when this happens, I can attest that it is not much fun.

I'm hoping that your only damage is a bent pedal spindle, but OTOH I can't imagine a force strong enough to bend a hardened spindle without doing harm to the crank. Post some pics .