Hmmm... it won't hurt you to try it off and see if you can tell the difference. It was a shock designed to mitigate the "65 mph shake" that early model Explorers had, but the 2nd gens never had that problem, so that shock is sort like an appendix IMO. Every one of us that go on offroad trails have removed that shock because it limits wheel travel, and to my knowledge not a single one of us could tell the difference when we removed it.
I don't know if I agree that removing it will affect rear stability since you will still have your rear antisway bar connected. On the other hand -since I believe it has no effect- it won't hurt you to leave it on either. As far as your left rear being a little lower, I doubt if it's that shock's fault. No vehicle is perfectly symmetrical. If you've completely removed your torsion bolts, then you've left your Explorer to level itself according to the measure tolerances over a 112 inch wheelbase... no way it will be perfect. To even your rear again, I suggest reinserting your left torsion bolt and raising your left front about 1/4" - an amount that no one will ever notice. Raising the left front that small amount will exert pressure on the opposite corner of the Explorer and lower the right rear about 3/4". To the naked eye that will even your rear. Try it.
Why do I think that will work? Because I've done the exact opposite thing while raising my Explorer via torsion twist - my left rear was also slightly lower (it's a very common occurance with many of our vehicles) and I evened the back end by lowering my right front/unscrewing the right torsion bolt a very little amount which released pressure off of the left rear and raised it up level with the right rear.
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edit:- I think this is the first post I've ever made in a street forum, LOL.
