I've noticed he does this when the "wrong" teams wins.
He hates the Rams. Probably wanted the Chargers to win. Or maybe the NFL wanted the Chargers to win and he is a made man.
Twice when the Rams scored against the niners in the championship, the TD calls are tainted with him asking about a penalty flag that ultimately went against the defense so was a TD. As an announcer you need to do what the refs do, and call the TD and then mention there is a penalty AFTER you have made a good "Gooooaaaal" call.
And yes, in the superbowl, that Donald play wins the superbowl and he's just talking about it like it's another play, not mentioning and the Rams are going to be world champions off that incredible sack/incompletion.