I've faced a dude twice this past week who ran Gun Monster all game. I'm not going to say the gamertag since that's not allowed on this site, but be careful if you face a dude on Xbox who wears Spongebob unis in Ravens stadium.
How do I stop this? Dude wasn't even running the ball, just throwing the RPO option every time. My DB's (which consist of some of the largest, best run-stopping DBs) were pancaked every time without fail. I tried putting Hard Flats and the Press adjustment on either side, but the CB would overshoot the throw even when they should have tackled for loss or intercepted it.