Steelers Center Question

[MJT]

I have an NFL training DVD which shows a goal line situation where the ball was on the 1/2 yard line. The offense comes up to the ball and the center moves the ball forward to about the 1/4 yard line and now the entire D-line is offsides. The supervisor who is doing the voiceover for the video says "do not penalize the defense on the play as the center moved the ball. There is no foul on the play." As Jim said, they just let it go.

[simpson]

That's what I figured, it just seems so unusual to see a center turn the ball horizontal to the line of scrimmage. I just wonder how the center ever got in the habit of doing that since he couldn't do it at any level before the NFL.