The problem is that w/ new technology, the NFL is lagging is using and adjusting to technology.
Ban instant replay? Um...yeah, sure.
Of course you're never going to get every call right. No one is asking for that. However, if the NFL is wanting to maintain any sort of integrity, a flagrant foul such as the NO debacle must be corrected. We're not talking about two guys hand fighting down the field, or an arm or hand coming in a bit early. The WR was intentionally tackled before the ball got there. The defender admitted as much. There was no judgment call to be made, it was an intentional penalty, and the ref ignored it.
Once again, first figure out what in hades happened, then fire that ref. Then work on a solution to avoid in the future.