Oh!
Sorry, guess I didn't read carefully enough.
Uh... why are you using this method? Surely there are better ways? Why don't you want to 'disturb the main,' and how does posing it 'disturb' it?
I'm thinking a better workflow might involve toggling some nodes to 'HasNoEffect', or maybe putting some poses in the Visor, or something... but of course I don't know precisely what you're doing.
Again, sorry for not reading carefully enough.
-Steve