[Samba] Want ADS, don't want to use winbind in /etc/nsswitch.conf

[francis picabia]

I'll ask a new question.  I use ADS with winbind for authentication of
samba shares on Linux.

If I want to have users in smb.conf which are not in /etc/passwd, can
I do this without the entry of:

passwd winbind

in /etc/nsswitch.conf ?

I'd rather not have this in nsswitch.conf as it messes up the way
the passwd command works for Linux users.

Is there another way other than removing the winbind reference
in nsswitch.conf each time I want to assign a local password?