Cannot access recovery partition after enabling filevault

Question

I did a clean install of Lion by extracting the disk image to an external Firewire drive, using disk utility to reparition my Macbook Pro's internal drive to a single, blank HFS+ parition, and then installed Lion to that partition from the external firewire drive.  It worked flawlessly.  At that point, without the firewire drive plugged in, I could boot to Lion, and if I held option while starting the computer, I could also see the recovery parition as an option to boot into.
After that, I used Bootcamp to install Windows, which resized my Lion partition.  After that, I enabled FileVault.  Everything went resonabley well: The Lion partition is now encrypted, and Windows still works, and the computer is functioning, however when holding option at boot, the only options I see are Lion and Windows.  The Recovery boot option is no longer visible.  I don't know if it was the act of using Bootcamp, or Filevault (or the combination of both) that caused it to dissapear, but I changed nothing else that I can think of.
I'm resonabley certain the actual recovery partition is still there. The diskutil list command outputs the following:
Lownins-MacBook-Pro:~ Lownin$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *320.1 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:          Apple_CoreStorage                         259.0 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
   4:       Microsoft Basic Data Windows                 60.2 GB    disk0s4
My question is: How do I re-enable the Apple_Boot Recovery partition as a boot option from the "option key while booting" menu?

Answer 1

OS X Lion: About FileVault 2
OS X Lion: Using FileVault 2 and Lion Recovery
Command-R