Ok I know that Kaleidoscope was just last week and that I was awake and attended as many sessions as the schedule would allow however I can't remember...
There was something from someones session that showed how this was possible.
I don't know if it was a Custom Defined Function or if it was a new Function in 11x, however there was something that would allow you to write what you wanted to the app log file from a calc script.
I am sure that someone will pipe in with more eloquent details.