removing wiper motor

[daveskatesallday]

im trying to remove mine but im having the hardest time i got the 4 bolts that hold it to the firewall out those are no big deal but then when i pull it back away from the firewall there is a nut that holds it on to something on the inside i can pull it away from the firewall a llittle bit but can't get enough room to loosen the nut and i can feel it from the inside with my hand when i remove the glove box but i don't have enough room to even fit a wrench in there so im stumped is there any easy` way to remove it??

[dr.occa]

Move the wipers to the up position like as if they were wiping up the windshield.