Umm, guys, what Rooney did was fairly simple. The only thing I did not have is his starting points, but there is no reason to suggest he'd be exaggerating them.
From that starting point(s), he went over all of his posts for a week, checking the pluses and minuses on each post -- that's fairly simple to do, actually. And over that time period he was either a +1 or a -1. However his reputation dropped 13-14 points. If the rep points were not taken away from the posts he did over that time period, then they must have been taken away from older posts. That much is 100%.
And, honestly, it's a little difficult to believe that he could lose 14 points from someone catching up reading old stuff. So, maybe not 100%, but I believe the evidence does indicate something not-quite-kosher going on. And, really, is that so difficult to believe? Like Neely, Rooney is making some enemies here but they are not content with just putting him on their foes list. It's immature, to be sure, but very believable that someone could go on a personal crusade to bring his points down, even if they have to wait 25 minutes between minuses and hunt down old posts to do so.
Now, picking up a second account just to do it faster? Maybe a bit less believable, but still possible.