anybody ever remove their back glass without ruining the gasket?

 

It is not hard to do, and the gasket should be fine. I've always been able to re-use them no problem. A little harder to install, but a dull screw driver works for me. I've heard of a 'string trick' for reinstallation.

 

So you just kind of pry the rubber out of the cab with the glass in it??

 

Correct.
And as stated, the string trick works great for re-installation.
Search for info on that.

 

on my extra cab I can have one of my side windows out in under a minute with a screwdriver. very helpful for when I lock my keys inside. I take the window out of the rubber, then the rubber out of the truck. Start at a corner. use glass cleaner as lube.