Remove Active Directory connection without connecting to the domain?

I need to remove all active directory settings from a Mac without unbinding it from the domain...

One of our people got a new mac, and I messed up and left 'network settings' checked when I restored her applications and account from a Time Machine backup. The upshot is that I now have two Macs joined to the domain under the same name. I just want to remove the AD binding information from the older computer, as she's going to use this one at home, and not on the domain.

I've converted her account on the Mac to a purely local OSX account, but there's a distracting 'No network accounts available' notice all the time at login.

I cannot unbind it, because that will remove the comnuter account from the domain, which will mess up the new computer.

Is there any way to just make OS X forget all of the AD stuff it has set?

I already tried 'dsconfigad -remove' but it will only work if it can contact the domain.