Ariz/GB fumble

[SamG]

Sorry guys, looking for another explanation...

For those of you who haven't seen it, in OT, Arizona is sacking QB Rodgers when he drops the ball, it bounces off his foot and into the hands of an Arizona LB who runs it in for a TD. Game over.

What I don't understand is the DL who was sacking the QB was with out a doubt grabbing the QBs face mask. Here's a picture... http://bloximages.chicago2.vip.townn..._dc=1263188945. Video: YouTube - Aaron Rodgers Fumble NFC Wildcard Game HD

So my question(s)...
1) Aside from an official not seeing it (I saw it from different angles during replays), any reason why this wouldn't be a flag?
2) If there was a facemask penalty, I assume GB gets the ball back (no turnover), +15 yards, 1st & 10?

Thanks