Posted 07 Jun 2012
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As with many things in this world, the act of going and asking someone for help leads one to think along a parallel line and figure the solution out themselves.
This has yet happened to me again... the answer is of course CanDockInDocumentHost.
I was setting it in the wrong place.
I'd rather be able to make the menu choice go away, but disabling it is a whole lot better in my situation than not.