Very doable, but a serious PITA.
This works best with 2 controllers. As noted by GWebb77 in the comments this works better in Arcade mode.
First, go into Settings => Player Skill => Fumbles => 0 (NOT 100). You want the second ("human") controller to drop the ball.
The main controller selects something to pull the defense back. I used Dime => Prevent.
The second controller uses Special Teams => Fake Punt W Release
Your main controller should select a defensive back (not a lineman, they don't like to do this) and move them right next to the punter.
When your 2nd controller snaps it, they're going to hold on to the ball. Take your main controller and go after the QB. You're going to find that the player is strangely not interested in sacking the QB, so hold him to it, and MASH
. (GWebb77 noted in the comments that
works better. I used
.) With luck, two things will happen:
1) Your defenders will STAY AWAY, or at least as far as possible.
2) Your player will strip the ball. This almost always happens. The annoying thing is that either one of your teammates or an offensive lineman gets there first. There really is luck involved here.
If this doesn't work, don't fret! You can do it again! Forever, if need be (and it will likely feel like it). Since you were offside, the offense will be able to accept or decline the penalty. ACCEPT it, and you can immediately try again.
Once again, ACCEPT THE PENALTY, so you can try it again. The line of scrimmage will end up moving all the way down the field toward the end zone, but will stop. That means you have endless tries until you either get the achievement, or break your controller. Hopefully it's the first one.
Here's a video of me on my successful Sack, FF/FR.
Hope this helps!