Welcome Avengr, great to have you here.
Spasticity, the MS perk we all know and hate.

There are some
meds out there to help, but nothing is going to make it go away
completely. Mine is medium to mild, so I use stretching exercises
and that helps to relax them a bit, so I can sleep.
I've used Lioricel/baclofin (SP), in the past, with little success,
but it has helped others, so you may want to try it.