Bill Murray Cameo?

I was watching Inserts last week and noticed something funny. In the opening sequence, where Boy Wonder's film is being projected onto a screen and you can hear but not see the audience... The last line is, "Hey, MAN! Where's the c--e shot?! Where's the C--E SHOT?!" It sounds a LOT like Bill Murray in his Carl Spackler voice... Which would make sense because Murray and Byrum are, or were at the time, very close friends, in fact Byrum wrote and directed the Razor's Edge as a Murray project, in 1983.

What does everyone think? Is this a Murray cameo as I have guessed?