Try holding the Home (bottom button, the circle) and the Power (the one of the top) for 10 seconds to restart it. If that doesn't work, you will have to restore :( or you can use ibooty from ih8sn0w set your idevice on dfu then run it. it will look like restore but is not.
restoring is the only way
The only way to get through your iPod Touch password without restoring is entering the password.
No. You must restore to Downgrade the Firmware!
REBOOT, but DON'T just Respring
for sure
Yes, you can "Undo" a Jailbreak, by going into iTunes and Restoring your iPod Touch, or iPhone.
Unfortunately, the only way to bypass a passcode is to restore.
yes, by restoring it.
Try clicking the home button
Trying phoning apple if not try restoring it.
restoring the ipod to factory condition, loosing everything
Yes, but you can sync them back