They need to play him now. However delusional Jerry will think they still have a shot at the playoffs.
And mathematically they do. Realistically they don’t.
Because he believes as long as they are not eliminated, that Dak will return and lead them into the playoffs.
I usually do not count any team out of they are at 3-7.
In 1990, Dallas was 3-7, and won 4 straight and only needed 1 win to make the playoffs. Then Aikman got hurt. They lost the last 2 games. We do not have Troy Aikman, even with a healthy Dak. Nor do we have an Emmitt.
He traded for Trey, and now is the time to validate that trade. Otherwise it was a wasted trade in hindsight.