Justfor1,
Do you deserve the respect and status within the group if you lie to them? There is nothing wrong with making a mistake, it's the cover up that becomes the downfall for people.
I don't think you should beat yourself up over this, nor should you let anyone else do it. It was a slip. So what? You start over working toward your year and you are truthful about it and respect yourself.
I am not in AA so I don't know the dynamics within the group. But I know that we all must be able to look in the mirror and respect the person we see there. That is why we stopped drinking in the first place, right?
Good luck, and congratulations on getting right back with your program of sobriety.