re: Roman Harper v Steve Smith

I heard in an interview last year that the reason that Harper did that was because Smith had went at Patrick Robinson's(I think it was him) knees to block him on an earlier play and the DB's told Smith something about trying to take his knees out and Smith mouthed back at them. So they told Smith they were going to get him. Too bad they didn't get him before he hit the endzone.

Not sure if that is true though.