Well all of your backups are stored where you initially saved them.
However, IF you formatted your SD card them they are gone.
You can verify this by taking out your card, and inserting it into
an adapter that will let it be inserted into the normal sized SD card slot
your computer takes. (only if you cannot view files from the
recovery menu) If they aren't there then
If your recovery is already flashed to clockwork why
feel the need to flash it again? Did you attempt to use
SPREcovery for some other reason? -Not saying SPREcovery isn't good
but for LFY Clockwork has been tested to work (as I said previously)
What other methods have you tried to get your phone to boot up?
Did you try searching via google?
searching easy terms like
"Droid stuck at M logo" will give you
results to check out...
If you haven't take the battery out, wait a minute, then
reinsert it, power on the phone with the keyboard slid out
and hold down X (power doesn't need to be held down)
What happens?
Have you tried the volume buttons trick?
Google, rinse and repeat
You'll figure it out.