My description could have been written more clearly, but I think that you can find the answer in the sentences that followed immediately. “Contact was close enough to my shoulder that my arm did not break but I got one heck of a knot in my left deltoid. It hurt for months. The only damage to the hang glider was the one down tube in the control triangle.”
Can an arm be pretzeled but not broken?
I guess knot.
But the FSM’s noodly appendages could be; I suppose.