Undo restore?

[dbeauchamp]

So... I installed a new instance of bitcoin wallet and copied the key in the clipboard (using the button in the address book). A few hours later I restored an old wallet, and then "accidentally" sent the content to the wallet address in the clipboard (the address of the wallet before I restored the old wallet).

So my question is: is there a way to access the private key of the wallet before a restore was applied to it (the original key when the wallet was installed). I do have root access to my phone.

I'm guessing that unless I had backed up the wallet before applying a restore then all is lost, and my beautiful bitcoin will live in a glass safe for the rest of eternity. Oh well...