Allen - I was thinking about sending it to multiple people:
-HR director, for sure, as main addressee
But also: -managing partner of the entire company -managing partner of my H's division -other partners whose names I recognize (so I know those close to H see this)
With that many power people seeing it, could it really be ignored?
Another idea is to cc my H and/or OW on email. That way, if office chooses to do nothing, they still have the embarassment factor of knowign all their superiors know.