Bumi was able to earthbend using only his chin, while being encased in a solid metal box. So let’s not sell him too short, eh?
But I agree with the overall idea. Yes, Bolin is trained more to an arena-style of bending but he was also raised on the street. Throw in his amazing heart and loyalty and this is no surprise. I attribute this moment more to a likeness of people who get amazing feats of adrenaline-induced strength when someone they care about is in danger.
A lot of people had expressed interest in the pro-bending earth disc cookies I’d put in my Bolin Bento a while back, so I thought I’d make a quick tutorial. Added food color to this batch just for fun :D