Okay, someone was able to upload the clip to the 'Net. Interesting byte.
My thoughts after linking to the MP3 here:
http://www.dooce.com/audio/fm100.mp31. Someone thinks it may be fake. The fact that the audio is out there is more suggestive of that.
2. The speculation about the music bed going on/jock being too startled to do anything - if it was near the final traffic report of the afternoon, FM100 like everyone else, utilizes some "Voy-Strackin" and this traffic report may have been uploaded remotely/pre-recorded. It's up to Metro to meet the time restriction and edit it to fit the window properly, not anyone in the FM100 studio. (and yes, believe it or not, traffic reports are pre-recorded sometimes)
3. Regardless, LOLerz! The most interesting thing I've heard out of Utah recently.