OK, so I just finished doing both regulators last weekend. I will share some more info about the process that's not covered in the initial post (thanks so much to the OP for posting, BTW)
1. My problem above regarding the last upper bolt being still stuck while removing was solved by looking around more. I found a really good post on Soarer Central about this. My problem above regarding the top right bolt not coming out was solved by raising the window all the way up, then sticking a screwdriver under the inner metal door panel with the tip resting right under the part of the regulator that just wouldn't push through. Using the screwdriver, I wedged it by pulling back on the screwdriver handle, which forced the tip of the screwdriver to push outward against the old regulator - voila, it just pushed the bolt out of the hole and I got the entire regulator out. Before I did this, I reached in and popped out the 3 bolts that held the motor to the door.
2. On to the most frustrating part of this entire procedure - the 2 square bolts that face outside the door which hold the window to the regulator. In this example, I'm working on the driver's side window. In the door you'll notice a round 'safety bar' which runs through the middle of the door which is parallel to the ground. I lifted the window so the bottom of the window was about 1-2 inches above that bar to give you some room. Note you MUST only use the open end of the 14mm wrench to unscrew that bolt. Once you get it open about 1/4 to 1/2 turns, it (at least mine) loosened up very easily and you can hand-turn it to get it out. The REAR bolt wasn't that hard. Just feel back there and slide the open end of the wrench. Feeling the bolt head will help you position the wrench over the bolt head, then unscrew.
The forward bolt (on the right side when I was doing the driver's side) was of course a total PITA, but what I did (see pic) was slide the wrench and hold it with my left hand, and guided it over the bolt head with my right hand. Again, feel with your hands to get the position of the bolt head so you can angle the open end of the 14 mm wrench appropriately. Once you get the thing slid over the bolt head (for me it was after a few minutes of many attempts and cussing of course), hold the wrench on the bolt with your right hand while you're unscrewing to minimize chances of it slipping off. Luckily for me, it only took 1/2 turn for it to loosen up and I used my fingers for the rest. This sounds silly, but you know how blind people have heightened awareness of their other remaining senses ? Because of this, I closed my eyes while I was trying to slip the wrench over the bolt head since that's all I wanted to concentrate on.
The pic below is pretty lame, but I had to take a separate pic of each side, then crop them together, but I wanted to show you the position of my hands/fingers when trying to get the wrench over the bolt.
Oh, one more thing. I used painters tape to tape the upper part of the door (above the window), then over top of that I used duct tape to keep the window in the position I wanted. It held it fine. It's easier and cleaner to take the painters tape off your painted surfaces. IF you have the duct tape on for very long (not sure how long), you will have a sticky mess to get off your paint. I just used a razor blade to get the gooey crap off the window.
I know the pic is small, but if you right click it, choose "open in new tab", go to that tab, and press (CTRL) +++ a few times, it'll blow it up so you can see the lettering..
Oh well, I hope this helps somebody!