Frank West's Left 4 Dead 2 Cameo

Here I am, enjoying myself The Passing, and I come across a pool hall with a solitary table with a ton of writing on the wall (Chapter 2, mind you). As I'm inspecting it, I catch this on the left side as you enter:

I had to mess with the values so it looked right.

For those who can't read it, it says:

Otis,

Out of film, no helicopter.
Zombies are too fast.
Not going to make it.

-Frank West

So I guess that's why he's not in the sequel...