Play calling Vikings tonight?

I remember the vikings got the ball in the 4th quarter with 9 minutes to go. Brett Favre was already looking gased, but they threw the ball about 15 times anyway with that much time left on the clock. It seemed like they were in 2 minute drill mode with 9 minutes left in the game! On that drive Favre completed about 4 out of 15 pes. THEY DID NOT RUN ONCE. Why would you p the ball that much with a quarterback who is struggling horribly in the game and not mix in the run with one of the top 2 running backs in the league? I think the only explanation is Favre audibling. That is why Childress doesnt like Favre. I don't think any offensive coordinator would call 15 ping plays in a row with 9 mins on the clock. Do you think Favre was audibling or is the Viking's offensive coordinator just an idiot?