Yoda is back to getting into the car without hesitation!  That was making me the most nervous, so it's such a relief.  I guess he's still walking the way the vets thought was strange.  I haven't noticed a change since they pointed it out, but it may just be the way he walks now (they weren't sure).  I think it is because Yoda continues to improve his physical abilities and be more active rather than less.  Only time will tell, but here's hoping this was all just a silly false alarm.  Thanks for talking me through it either way!