Aww, let's not tire Max out during the off season.
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I have to confess my first mental reaction to that sentence was not PG rated.
I think you're more likely to see people crash into the boards after a fall, like Jeremy at Sochi or Joshua at 4CCs, than to straight-out hit the boards while skating. (I'd forgotten the Patrick incident.) Actually, I'm surprised Max was the only one to crash into the boards in competition at that Worlds; the rink was smaller than usual, apparently.
Is the Yagudin one you refer to the 4-3-2 combo? Because he totally just fell off the back of his blade. Possibly spooked by the wall, but I'm not sure. (Aside: Oh, a 4-3-2 combo. Sigh. You never see those any more. Those were the glory days.) Oh, I wonder if Max could try a 4-3-2 one day?