Like the Calvin Johnson "possession" controversy from last year, I think the NFL has too many pointy-heads making up the rules.
The very next week after the Calvin Johnson thing, I watched a highlight reel of a receiver making an almost-identical catch in the end zone. But, he lost control of the ball after he crossed the plane of the sideline, and it was ruled a touchdown.
Throwing throwing the ball out of bounds without a receiver in the area is illegal, and is called when it happens (though NFL quarterbacks are usually smart enough to throw it close enough to a receiver that it's not going to be called very often).
There is no way an official could know, unless he was psychic. Or maybe he was thinking “gotta be on the lookout for a safety” and then screwed up because of the Superbowl jitters. Or....Las Vegas?
As John Madden once famously said, “You have to remember, there are three teams on the field."
I have never seen that called either but after it was explained, it was a correct call. I also noticed the players picked up on it immediately and began making “safety” symbols with their hands.