To be honest, Saturday was the first well officiated game I've seen all season (out of all games, not just Nebraska games). The only questionable call I saw was on the ping pong ball interception, it appeared the Iowa State defender's knee was down when he got ahold of the ball. Even that though was bang bang, and not entirely conclusive. Of course the rest of the season it's been ridiculously bad.
I'm pretty sure you can catch a ball while down (unless you went out of bounds), you just can't advance the ball (for obvious reasons). That was just excellent heads-up play.
But yeah, I saw some bad officiating this weekend all around (USC game, anyone? That horrible face mask that tore the receiver's helmet off right in front of the official?). It's strange how there have been so many hyper-reactive calls there have been (Suh's hand coming down on the top of the QB's helmet) and how many dangerous/reckless moves have been overlooked (Robinson, I think, being tackled by his headgear). And, no, not just against the huskers, but all teams (our players have 'gotten away' with a lot, too).
Maybe this isn't due so much to officiating but how many angles there are and how much detail there is in modern broadcasting. We see a lot more than we used to and with greater clarity (and I was able to rewind to the non-replayed helmet tackle of Robinson during the next commercial to watch it a couple of times to see that it really looked like he was grabbed by the back of his helmet or earhole and pulled down... he didn't wrap his head up, he grabbed his helmet). A few years ago, that wouldn't have been so easy to see, wider angle views, maybe no camera at that vantage point, and HD all factor into what we're seeing.
So maybe there aren't more fish, the holes in our netting have just gotten a lot smaller.