In general secretaries have way more power than one would normally think.
This technique has a name, either paralepsis (http://grammar.about.com/od/pq/g/paralepsisterm.htm) or preterition (http://en.wiktionary.org/wiki/preterition). I mention this, because I feel like having a name for it helps point it out, and perhaps can convince people that they aren't as clever as they think they are when they employ it.
Please don't bring down the level of discussion here by making the joke you are pretending not to make. Thanks.
As far as rhetorical devices are concerned, there are many of them that may be used in a discussion without detracting from it. HN does not need to be dry and often is not.