umps are given a line of how to "judge" the rules and this is a play that has been outside the rules for decades, but almost never gets enforced. To have the commissioners office come out after and punish Utley is odd considering how many very similar tackles have happened in the past 2 weeks without the commissioners office getting involved.
If there was no injury this play wouldn't even have been looked at. Was it wrong? HELL YEAH! Should utley have been suspended? NO! Changing how the rules are interpreted in the middle of the playoffs is lame.
I really think mlb has seen the bad press that the NFL has had the last couple of years and this is a move to subdue the critics.