Interesting.
I was playing COD4 online a few weeks ago. I got booted from the server once. Apparently the game has a mechanism that monitors your ping and if it falls below some threshold you are booted from the server, probably to prevent silliness like described here in AH2.
I'd say I'm surprised AH2 doesn't implement something like this, but I'm not. We wouldn't want to offend or alienate any of our players, would we?