This just goes to show you the NFL is run like the wild wild west. Changing the rules during the preseason, shining a spot light on (ultimately changing) the rules during the season, and on top of it all of refs interpretation of the rules based on their feelings or what the league slants them too. Don't tell me there won't be an increase in personnel fouls flags for the coming weeks.
It's the biggest thing I hate about the NFL. Why can't the league have leaders who take 7 months during the offseason to verify and establish the rules/policies and have the confidence to run with them for a full season so everyone has an even playing field?
On a lighter note, the ref almost got a fine in :57 of that video