Great post putting it in a nutshell! The best description possible..."the hinge in the middle of the bike"...very accurate choice of words to describe the sudden alignment change at speed when the lateral forces exceed the swingarms limitations. It can happen at speed or even while executing a spirited turn out of a parking lot from a dead stop. Anyone who tells you its not real needs to get out of the house more often and get educated.
I liken the use of any stabilizer as a "failsafe". Its like steadying a feeble arm by offering a hand. Doesn't matter who offers the hand. First and foremost though, the condition of the OEM swingarm components need to be up to snuff.

 

To learn more on this subject, read my thread on 'bagger wobble'. Feel free to ask questions!

 

The biggest reason the 09+ bikes have better manners than the 08-earlier bikes is because of the forward motor mount, the relocated upper stabilizer link, and better tires. The motor mount was doubled up, and the upper stabilizer link was moved to a more forward position, which increases it's effectiveness, and the tires are much improved. All together, it has significantly tamed the wobble, and the tendency to follow tar snakes. The frame itself has little (if any) to do with it.

You can do several things to tighten up the handling of the early bikes. First is to make sure maintainence is up to date. Replace or upgrade the swingarm bushings. Replace the forward motor mount with a urethane motor mount. Adding a progressive touring link is a help, or you could basically acheive the same thing by relocating the upper stabilizer link to the current position ahead of the front cylinder. (not a simple mod, you need to machine the front head to accept the stabilizer mount, and weld a mounting boss on the left downtube).

I've done many of these mods on my 07, along with upgraded the rear tire to a 180 Avon, changed Ohlins rear shocks (now Arnott Aldans), billet triple trees, etc. My bike handles better than any stock touring Harley, including the 2014 Rushmore models. It just takes a little time and effort. It doesn't have to be expensive, fixing some of the handling woes of the early bike is much less expensive than trading in on a new one.

 

So this eliminates all rubber mounting in the swing arm....hmmm how is the vibration aspect?

 

No, it doesn't eliminate the rear rubber mountings, only the old style cleve blocks, used in early rubber mounts prior to 2002, when the factory introduced the steel self-aligning bearings (in the CCE retrofit photo).

 

The wobble is true. It's there, don't beleive anything else. It will visit you when you are doing 50-70 around a big sweeping curve while you are enjoying the view. Very poor frame design by HD. Even they admit it. All know it including HD that is why they tried to fix it in '09. Not a real fix, but better. Lots of threads on this forum on the subject. Wrenches smarter than me can explain the physics behind it.
I added the Bagger Brace to my 08 and she tracks like a dream now, no wobble. Best place to try it is to find a section of road or highway that has been scrapped or "groved" for new topping. you know...the ones where they put up the littl orange sign that has a picture of your buddy screaming for help while his bike goes all over the road? Yep thatts the one. Note how the wheels stay in line when you ride on it. Without the Bagger Brace my front wheel would be going 6 inches to the right of my back wheel...Now that is fun. It will pucker you so bad you will need a stick to pry the foam of the seat out of your backside. Shew!!! or you will just loose control alltogether and kiss the groved pavement...ouch. I think purchasing one of the third party fixes from a reputable firm is much more cost effective and safe than a visit to the ER, months of rehab, and a totaled bike. What do you think?