I can't see that working. HOWEVER, I have removed the pad with everything still in place. 1/4" drive deep socket of the appropriate size, a 6" extension and small ratchet. There are 6 studs. Once you break the nuts loose they easily turn by hand so its not like you have to ratchet them all the way off.

But seriously, why do it with the dash in place. You've gone this far, spend another 1/2 hour and pull it out completely.