Ok, so we got it out without cutting it, but this was on a lift with two people manipulating the exhaust back and forth. It takes a little tetris/gymnastics to get it out of there in one piece, but it is 100% doable. On the ground or on jackstands? I'm not sure I would have bothered trying to get it out in one piece.
Of course, once we got it out and realized how long it was, and I had no easy way to transport it (and no real potential to sell it, it's likely going to end up at the recycler), we ended it up cutting it just past the second flapper so I could stick it all in the bed of my truck.
My advice would be to just cut it out with a sawzall, one cut will make pulling the old one out 10x easier. And then the new one goes in exactly as you would expect it to. There aren't any instructions in the box (other than to consult the official accessory service manual, AKA have your dealer do this), but you really don't need any, it pretty much fits together and hangs perfectly. Keep the existing clamp from where the flex pipe connects up toward the front, you'll reuse that one, everything else is in the box.