First of all, the ad campaign is over, so the guy can do whatever he wants with his iPhone; second, per the theories floated over in the Engadget comments section, chances are the jailbreak was done at the behest of Jimmy Kimmel Live producers so that they could get TV out from the phone and put it up on the big display.
Either way, this iconic image of the Mac pitchman with his jailbroken iPhone merits a resounding No Comment. Video clip in the second half of the post.
Thanks to Riyan for the picture.TU