Flag?

Congratulations to the University of Michigan for winning last night's Sugar Bowl on a field goal in overtime. The announcers didn't mention it - other than to marvel at the ability of the Michigan kicker to make the field goal after a stutter first step BEFORE THE BALL WAS SNAPPED.

My question is shouldn't the kicker have been flagged for illegal motion or a false start because of his stutter, false step just before the snap?

It's ironic that some football plays are endlessly scrutinized and reviewed in slow motion to determine if a pass was actually caught, but a kicker can commit an infraction in front of the world (and the refs) and not a word is said about the lack of a penalty call.