New bug report -- I just had the game crash upon doing the shake. It gave me the 'blocks falling down' screen, but pressing B didn't do anything unfortunately...
While I'm at it -- the game that was about to end (or not, depending on how the shake went) is now just lost to time, rather than getting to show up on the high scores... have you thought about having an autosave while playing, in case of crashes, rather than just on exit?