having used Great Planes CA hinges a BUNCH, and abused heck out of them... I've never had them fail without good cause.

I'm not saying its impssible that you got some bad hinges... I just haven't seen one before.

I HAVE seen them pulled out similar to yours from aileron flutter. The ailern gets to making a buzzing noise as it wiggles up and down VERY fast. This is yanking the hinges up and down, and can exert enough force to delaminate the layers of the hinge. You THINK yo slowed down enough and stopped the flutter in time... but you land to inspect anyway... and the aileron comes off with a gentle tug.