Originally Posted by
Titanium Dome
Heh, well, okay.
I took a scrap piece of 5/8" plywood and snugly screwed it into the extant holes so that about 2" of plywood extended beyond the sides of the cab. I took a 4 lb. mallet and firmly but carefully rapped the back of the plywood (inside the dimensions of the cabinet back) several times around, driving everything forward to get some compression breaks at the sticking points.
Then I turned the cab over onto some padded 1x2 supports on the floor, took a wood block and the mallet, hit the 2" plywood extensions on the left, then the right, then the left, then the right, and the thing popped right out in one piece.
Here's a not-to-scale drawing.