Sugar had similar back end problems, starting in Sept of last year. Steroids and acupuncture were a huge help, but she did have some relapses (including one right before Thanksgiving last year where I thought I was going to lose her). She also got a couple of Adequan shots. The first was a big help, the second helped, but not as much. We kept up with a regular schedule of acupuncture apts, spreading them further out as time passed, but I think that is ultimately what helped the most, the regular acupuncture. By the beginning of this year, she had very little back end weakness, and that lasted until I unfortunately lost her in July from unrelated causes.
I hope Spencer "bounces" back (not literally!)