A thread at WebmasterWorld named Only homepage removed from google reports on sites losing their homepage from the Google index. Some people are reporting emails from the email address email@example.com that read:
The following urls/messages have been removed. Please contact firstname.lastname@example.org if you do not approve:
Seems like a scam to me. Check the thread and look out for this.
Side note: Very busy day for me, so if I misquote or do not post enough today, please don't be mad. :)