Ken I'd say the slightly 'softer' nose saved the plane, it's acted as a crumple zone. I'm sure if you'd done that with decent beam mounts in the front you'd be looking at more structural damage, and maybe a throwaway.
I always found it odd that beam mounts are still soup du jour for stunters, considering in almost every other discipline it's been superceeded, but it is light, keeps the engine straight and works. (till they go soggy anyway). I think that there's still some refining to go on with electric mounts for the most part to keep the thrust line stable. Who knows whether your mount isn't twisting when you bang it through a corner, or worse yet, the whole nose?
Also I've never encountered a bellcrank lockup with copper sleeves, but I have had line connectors turn 90 degrees at the airplane end, giving me either a big dose of up or down. I've found this to be very prevalent if you use eyelets, so i tend to use copper yokes instead.