I owned the game for 2 weeks before I found out you could do this! xD
I got it on Release (2nd March) and when me and a few friends were playing, one shook the Wii Remote as she'd never played before! To everyone's surprise it got bigger and went faster, ever since I've been doing it allot. I thought it only happened in Bowser Jr Breakdown. xD It rigs the Dice Block, for an entire game of Magma Mine, everytime I shaked the Remote, I rolled a five. i'm not sure if it was Pure Luck or something to do with shaking, but I only got a 5 when Shaking. I used it to my advantage really.