Yes, I thought so too,,, Everyone can log on and do all of their work, though.
I rebuilt the group shadow and password files in etc- no userids messed up I'm pretty sure
then synced the home back
rsync -a -p -g /drivehdb3/home /
then ran a script :
d in * ; do chown -Rv $d:$d $d ; done
to chown all of the folders back to their own perms.
I'll re-run this after school before I go home for the weekend.
Thanks for any more ideas.