Putting a machine back on the domain without rebooting

I deleted several machines from our Computers OU in AD (inc servers) as a result they cannot authenticate
from the Domain. SQL and AD functionality has also been lost due to this.  I have exchange fixed but not the
other servers as we can't take them offline just yet.  Is there anyway I can re-register these servers on the Domain without removing and re-adding?  All are Win 2008 R2 servers
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AmitIT ArchitectCommented:
If you have recycle bin feature enabled, then you can restore it. Else you have to rejoin them again.
wannabecraigAuthor Commented:
recycle bin where?

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Windows Server 2008

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