Bus Driver Plows Through Snowman, Forced to Resign?

I'm confused. Why did the driver resign again?  Unless he got back to the meeting and just blatantly told everyone that he never saw the snowman (presumably not the case, it was like a 6 foot snowman) I don't see what the big deal was.  

It's not even like they could make an argument that he didn't know if it was a person or a snowman.  Snowmen look nothing like people for reasons I've never understood.  I was legitimately confused the first time I had the cognizance to understand what my parents were up to when they told me the obese statue of three snow balls was a "man."  No, its three snow balls stacked together, I was in preschool with a wild imagination but this was still a stretch for me so I'm pretty sure this bus driver understood the difference. 

If anything this guy was just spreading Christmas cheer, giving the guys with the video tape a little thrill.  And Matt Lauer can cut the high and mighty routine there at the end.  The story has ended, three bored geeks with a video camera built a snowman on a quiet wintery street.  The bus obliged them and obliterated it.  End of story.