Hot route them to buzz zones perhaps?
I do that with the Cover 2 Buc play in Nickel 335. Instead of playing the flat, I have both corners play buzz zones and the nickelback (who is assigned a buzz zone already), I have him blitz.
It is tough to do Cover 2 Buc in this game though. It is the same with the 4-2-5 Cover 5 that TCU runs constantly. Two man deep, 5 underneath and about 10 yards. The Cover 2 in the game puts the corners in the flat leaving a huge amount of space along the sideline. Hot route them manually is the best choice, just mix it up so a human opponent doesn't catch on.