To use a few cliches..."no looking ahead" and "play every game like it's your last." We have a home, night game against a tough conference opponent. In my opinion, Weisman may be the difference between a win and a loss this weekend.
With Weisman (i.e., a running game), pressure is taken off Vandenberg which may help open things up for the pass game.
Without Weisman (i.e., no running game), expect the passing troubles to continue (and more turnovers, and more 3 and outs, as the offense becomes more one-dimensional and in more difficult 3rd down situations).
If Weisman can go, we have to play him. We certainly need him. Worry about next week, next week.