You say you've been "popping" baclofen and valium like M and M's. If it were me doing that, I'd have the spasticity in my back and the MS hug type of pressure you describe. But of course I have Porphyria which makes me sensitive to those drugs--it is quite possible you are also sensitive to them whether or not you have Porphyria. You also react badly to steroids and Lyrica, as I did. All of these drugs would make me very spastic and Lyrica would give me the "hug" in spades.

I just wish you could get off some of these drugs. I don't mean ALL drugs, but somehow you may be taking more than you need and they may giving you side effects.
My worst symptom up until recently has been spasticity, and these drugs give me that.

I take Klonopin in very small dose, to which I react entirely better than to Valium. Perhaps a change to Klonopin, a different drug of the same class, would help. It helps spasticity and shakiness. I would also take some magnesium, calcium (at a different time than the magnesium) and some Vitamin D3. The magnesium was recommended to me by a neuro when I could not take Baclofen, to ease spasticity and jerkiness. And it worked. I take 900 mg a day, a large dose, in two doses.

The burning feet has been my recent bug-a-boo, too, neuropathy. I have no cure for that except time.

May you soon find coordination and peace.

Mariel