Wow. This is probably the most disappointing post I've been a part of on this website. Rather than having an actual discussion on the play, which I believe was the original posters intention, I'm being attacked from behind a computer screen for disagreeing.
What I'm calling a semi-side step (was there a point in saying "whatever in the **** that is" besides being a jerk?) is Ichiro's first reaction when the catcher gets the ball. I included "semi" because he didn't take a full step toward the dugout which that might imply otherwise, he took a less than 45-degree step from his current path and then moved his body around the tag attempt while continuing on that line.
If I'm reading through all of your cursing and attacking properly, I think the part of the play we're disagreeing most on is after this though. When he runs past (I'll avoid the term overruns since that seemed to p iss you off) the plate you are saying he is outside of the defined baseline and should then be declared out. While I do see where you're making that determination, I still disagree with it. The video isn't showing up right now (not sure if it's my computer or was removed by the site), but if I'm remembering properly, I believe Ichiro stopped as quickly as his momentum would allow after avoiding the tag and immediately attempted to return to the plate. This is what I'm determining as "overruning" the base, rather than out of the base line.
Personally, I RESPECTFULLY disagree with your interpretation. (Too bad the same respect can't be shown both ways.) If we were on the field together, I'd full heartedly support your call though, as I do understand it. Feel free to get in your last word, but I'm done posting on this topic. It's definitely the most disappointing rule "discussion" that I've had on this site.