Milter-greylist

I was wondering how to modify the greylist.db data while
milter-greylist is running.

Basically I would like to be able to do some post processing on email
that gets through.  And if it is spam I would like to remove it from
the autowhite listed portion of the data and maybe even remove
greylisted stuff from the same IP address.  Kind of like my own little
RBL.

I see that if I have two milter-greylists communicate with each other
then I can delete entries on the remote system but I don't see an easy
way to do it on the local system.  I'm probably just being dense and
missing something.

Any help would be appreciated.

What would be cool is if I could use the port 5252 connection to
communicate with the server from localhost but without the server
trying to loop back on itself.

Thanks,
John