IANAL, but if I'm reading it correctly, there are two exploitable loopholes in the ToU.
First, it doesn't stop you from paying someone real money to raid or run arenas with you, as long as they use their own characters and not yours. So offshore farmers could hire themselves out to raids or arena teams that either had a slot they couldn't fill or wanted to get carried. They could even charge extra to pass on loot.
Second, they say you can't "purchase, sell, gift or trade any Account", but I don't see anything that prevents you from leaving an account to someone in a will, the executor of your estate from delivering it, or the heir from receiving it.