my macbooks keyboard is frozen because of this and I want to make it work again without losing all my data

run in safe mode and dont worry it will take a while to boot up

Can someone explain to me how I can run the automator script w/o keyboard, mouse and USB? Right now I think I'm experiencing the DFU mode problem as my keyboard, mouse and USB aren't responding, but i"m not sure how I can run the script w/o them working.

I do have an external OSX I can boot off.

As predicted by the Dev Team, missing option to use DFU mode in Mac OS X 10.5.6 has been a bug. It is fixed now in Mac OS X 10.5.7. Use the internal Software Update function and update to 10.5.7 and you#ll be able to get into DFU mode again.

Download and install the update
Mac OS X 10.5.7 Update
or even better the combo update
Mac OS X 10.5.7 Combo Update

and you will be set.

No more need for the Automator based fix in 10.5.7. I have un-stuck and closed the thread.