Sorry, but no.
Tellers and all customer facing positions are mandated to ask and file reports/make notes on withdraws and transx over 10k. This is fact - I worked in the 'system' for many years.
You may be correct i know there is a whole bunch of information they have to submit I have worked with a number of the systems for reporting myself but not with the policy side. You are not under any obligation to provide you reason for the money though, then there is the whole SAR thing on top of that.