How on Earth is the wonderbolts able to cut off the neckspikes on Spike's, well yeah, neck?
A full grown dragon has about the toughest scales, and also spikes that is nearly indestructible. So how could the wonderbolts just "shave" them off like that?
It has to be a mistake, someone didnt think this through when they made that episode. Because that was truly silly, not silly like Pinkie Pie, but stupid silly.