: I could understand if it calls out modding and deliberately messing with
: external hardware (i.e. lag switch), but treating the use of
: undocumented/unintended gameplay features as a violation of the network
: ToS sounds bizarre.

Say's it as clear as day, here's an old post from a Bungie Employee I dug up...

Posted by: Ninja 0n Fire
The intentional exploitation of any bug while in the matchmaking environment is cheating, especially if it provides the user with an advantage or alters gameplay in an unintended way.

You can forget all of your qualifiers, such as whether or not all players can do it or the skill level required to perform the exploit. Those factors do not come into consideration when making these determinations.

Just because it's a behavioral problem which we don't automatically detect and ban you for, doesn't mean it isn't cheating. That's what the Xbox Live feedback system is there for, if you feel that someone exploiting a bug is unfair, leave feedback.

All that said, you really should play the game without exploiting bugs, because if you ever do get matched against a Bungie employee and we witness you cheating or even being excessively vulgar or offensive, we most certainly can speed up the process of you being removed from the general population of Halo 2.