[Replication] Nasty bug and reinitializing without a snapshot

So, there's a bug in SQL Server 2005 SP2 _and_ SQL Server 2005 SP3 (fixed in SP2 CU12 and SP3 CU3), where a commonly-used replication SP can inadvertently reset your subscription, and you get the dread "The initial snapshot for publication...is not yet available" error. In my case I couldn't easily snapshot the data across, so a workaround is to sync the data, then recreate the subscription, specifying that it does not need to be initialized.

Bug: MS KB967192
http://support.microsoft.com/kb/967192/EN-US

Fix:
http://technet.microsoft.com/en-us/library/ms151705.aspx

Essentially, what you need to do is drop the subscription, sync the data, then recreate the subscription, making sure to uncheck "Initialize" (if using SSMS).