Originally posted by KMFDM
what i do when they are stuck is take a flat head screw driver and stick it on the outer edge of the locking mechanism where there is a slot and hammer it lightly in the direction needed to unlock. you don't want to hammer it too hard though because the edge will break off.
That's exactly what I did. It was an especially tight sqeeze for me because even though I took out the coolant reservoir, I left the battery in. After struggling with my bare hands forever, I took a screwdriver and rubber mallet and it gently unstuck. Good luck!