This is incorrectIllegal motion would have been the correct call.
No players performed any shifts. The lower player (who started running up, then realized he was supposed to be on the other side) got set before the snap. The top player (who started running down, then realized he was supposed to be on the other side) never got set, and so was illegally in motion before the snap.
Quite simple, really, if you know what you're talking about and actually look at the play closely before spouting off into a rage.