Whats up guys,
I was able to complete both of these challenges by running "8 UP SAFE MAN" punt block coverage. Getting in that coverage will force the computer to audible to a pass play. From there you just have to play it 4-5 times to force the two incompletions. User the Deep guy. I have hopped in Co-op challenges and help a friend complete his too using this method.
Note** - For some reason you having to be moving your user (deep guy) while the ball is snapped or he will freeze in place the entire play. Good Luck!