Ouch! That's to bad Scott , And your right , all you can do is stare at it as it goes in. Sounds like you have a good friend, willing to own his mistakes. And you not wondering what happened.
You`ll find the LT-40 a good trainer. I`ve had a ST GS40 , Evo .46 and a Mangum .52 4c on mine. It flies the best with the Magnum , but the GS.40 pulled it nicely also.
Sometimes Murphy shows up in the strange ways.